Here's a little more from Majid al-Ansari, the spokesman for the foreign ministry of Qatar, which has mediated the deal.

He confirmed that Qatar is expecting some Palestinian prisoners to be freed by Israel, "as a result of the release of hostages at around 4pm".

But he said he could not disclose information about how many prisoners would be released.

He said all the hostages to be released on Friday are women and children, and that hostages from the same families would be put together in the groups to be released.

Qatar is expecting aid to begin going into Gaza "as soon as possible" from the start of the truce at 7am.

"It will be a fraction of the need in Gaza," he said.

Majid al-Ansari says the timing he has given, of a 7am start to the truce, and the 4pm release of the hostages, is only the timing for the first day of the four day halt to fighting.

He has said 13 hostages will be released tomorrow, but added that this number applies only to Friday.

Under the deal, 50 hostages are to be freed during a four-day pause in fighting.

Thirteen hostages taken by Hamas will be released on Friday, Majid al-Ansari a spokesman for the Qatari foreign ministry has said.

He said Qatar's aim is for this deal is to end with a lasting truce.

Some of them are elderly women, some are children, and will be released at approximately 4pm, he said, noting there are a lot of "moving parts" on the ground, and that will happen every day within a window of time.

They will be handed over to the Red Cross, and the idea is to make the transfer as safe as possible for all parties, he said.

"We have to remember this is a war zone," he added.

A spokesman for the Qatari foreign ministry has been giving some details of the deal under which some hostages will be released in exchange for a four-day pause.

A list of the civilians to be released from Gaza has been received, he said, and the first group of civilians will be released at 4pm on Friday.

He said the criteria on who is to be released was "purely humanitarian" - "getting woman and children out of harm's way as soon as possible".

Qatar, which has been mediating between Israel and Hamas, has just announced the temporary ceasefire in Gaza will start on Friday morning.

The first group of hostages will be released in the afternoon.

We'll bring you more on this as we have it.

We've a little more now on the IDF and Israel Security Agency (ISA)'s confirmation that they've detained the director of Gaza's al-Shifa hospital.

In a statement they say a "terror tunnel network" under the hospital "exploited electricity and resources taken from the hospital" - a claim the Israeli military made in a video it shared on X, external yesterday, which shows toilets, a kitchen area, cables and an air conditioning unit, in tunnels they say are below the hospital.

The statement says that under Abu Salamiya's management, "there was extensive Hamas terrorist activity" at the hospital.

Israeli forces took control of al-Shifa, Gaza City's largest hospital, last week after alleging Hamas was running a large command centre underneath it - a claim the US backed up.

Hamas denies the allegations, but the Israeli military has released what it says is evidence proving the claim - including the video we mentioned above.

Image source, Reuters

We've now had confirmation that the director of Gaza City's largest hospital, al-Shifa, is being held by Israeli security services.

Earlier we reported that Abu Salamiya had been detained - citing a doctor at al-Shifa who spoke to BBC Arabic - but the Israel Defense Forces (IDF) and Israel Security Agency (ISA) have now confirmed that Salamiya has been "apprehended and transferred for ISA questioning".

In a joint statement, officials say they've found "evidence showing that Shifa, under [Salamiya's] direct management, served as a Hamas command and control centre".

More now from the Israel-Lebanon border, where Israel and Hezbollah (a Shia Muslim organisation which is politically influential and in control of the most powerful armed force in Lebanon) have traded rocket fire since the war erupted on 7 October.

The Israel Defense Forces (IDF) reports about 35 launches from inside Lebanese territory on Thursday, which it says crossed towards Israel.

Israel says its aircraft intercepted several launches and retaliated with artillery.

Earlier, the IDF's chief spokesperson Daniel Hagari posted on X (formerly Twitter), saying there had been activity near southern Lebanon.

Orla Guerin
Senior international correspondent, in Jerusalem

As we've reported, there's been a delay to a deal between Hamas and Israel, which is due to see a temporary ceasefire and some hostages released.

I'm now hearing from an Israeli government source that Hamas has made additional demands to the deal - though it's not clear what those demands are.

As part of the agreement, 50 Israeli hostages are due to be freed by Hamas and 150 Palestinian detainees released by Israel - along with a four-day temporary pause in fighting.

The deal was originally due to go ahead this morning, but was delayed until Friday following an announcement by the Israeli government last night.

James Landale
Diplomatic correspondent, in southern Israel

When politicians visited Israel in the past, they used to pay their respects at Yad Vashem, the memorial to the Holocaust in Jerusalem.

These days they visit one of the kibbutzim near Gaza where so many Israelis were slaughtered by Hamas on 7 October. So this morning David Cameron did just that, arriving at kibbutz Be’eri, on his first trip to Israel as the new UK foreign secretary.

Accompanied by Eli Cohen, his Israeli counterpart, Cameron walked through the leafy avenues of the farming community where around 100 people were murdered just a few miles from Gaza.

He climbed over the rubble into burned-out homes still acrid with the stench of soot. And afterwards he said he had heard and seen things he would never forget.

Cameron urged everyone involved in the paused hostage deal to make sure it happened, saying a humanitarian pause was vital so aid could get into Gaza as hostages got out.

But Cohen made clear that even after hostages were released, Israel would continue fighting to achieve its goal - namely “the destruction of Hamas rule in Gaza”.

Image source, Reuters

With all eyes on Gaza and Israel - where there's been a delay to a deal that includes a temporary ceasefire and the release of some hostages - the Israeli military says its forces remain in "a continued state of combat" in Gaza.

Peter Lerner has told our colleagues over on the BBC News channel that the military will hold fire once the details of the deal are finalised, and "we receive instruction from the government".

"I think it's important to note that we continue our strikes against Hamas wherever they're hiding," he says. "This is a brutal merciless terrorist organisation ... the paradigm of their existence needs to change."

Lerner adds that there's a "questionable history" when it comes to Hamas and ceasefires:

Orla Guerin
Senior international correspondent, in Jerusalem

I'm hearing more from an Israeli government source now, who says there are "hopes" the framework for a deal between Hamas and Israel will begin tomorrow.

This is a change in language, which suggests the timeframe may be less certain.

But this is a fast moving situation, and Qatar - the key mediator - has said that the timing of the deal will be announced in the coming hours. (The deal includes a pause in fighting, the freeing of some Israeli hostages being held by Hamas and the release of some Palestinian detainees from Israel.)

It may be that delays in gathering the hostages together in Gaza are slowing things down, but that's uncertain.

Ethar Shalaby
BBC Arabic

As we've just reported, Israeli forces last week raided Gaza's largest hospital, al-Shifa - with hundreds of people eventually fleeing and the World Health Organization (WHO) describing the facility as a "death zone".

Israel claimed Hamas was concealing an underground command centre there, which the group denies.

It has made similar accusations about the Indonesian hospital - also in northern Gaza - from where a senior doctor now tells the BBC: "The same scenario at al-Shifa is expected to happen unless the truce takes place."

Dr Marwan Sultan, medical director of the Indonesian hospital, reports heavy tank fire around the facility, firing in 15-minute intervals:

Sultan says 10 medical professionals and 200 patients are at the Indonesian hospital.

Doctors have asked Gaza's Hamas-run health ministry for three buses to evacuate the hospital, he says, and for 13 ambulances for patients who cannot be seated. They are also in communication with the Red Cross.

Ethar Shalaby
BBC Arabic

The director of al-Shifa hospital in Gaza has been detained by the Israeli military, according to one of the doctors working there.

Dr Adnan al-Bursh, who is head of the orthopaedic department in al-Shifa, but is currently in the Indonesian hospital, spoke to the BBC earlier, and said Abu Salamiya was detained while accompanying patients who were evacuated from the hospital.

The Israeli military has not yet confirmed this.

Israeli forces took control of al-Shifa, Gaza City's largest hospital, last week after alleging Hamas was running a large command centre underneath it - a claim the US backed up.

Hamas denies the allegations but the Israel Defense Forces (IDF) has released what it says is evidence proving the claim. This includes video, released over the weekend, showing a tunnel shaft that the IDF said is located 10m underneath the facility - and runs for 55m.

Hundreds of people, including patients, left al-Shifa on Saturday by foot. The IDF denied ordering the evacuation and said it had agreed to a request from the hospital's director for those wanting to leave to evacuate through a "secure route".

Image source, Reuters

Jeremy Bowen
International editor

I've been talking to government sources in Qatar - the mediators of the delayed deal, which is due to see 50 Israeli hostages freed by Hamas and 150 Palestinian detainees released by Israel.

Here's part of a text message one sent me:

So the delay seems to be on both sides - not just Hamas.

Orla Guerin
Senior international correspondent, in Jerusalem

The message we're getting this morning from Israeli officials, the White House and from Qatar is that this is a delay.

It all happened very late last night, at basically no notice. We were told initially that the pause in fighting would begin this morning, and that the first batch of about 10 hostages would emerge from Gaza via the Rafah crossing soon after.

Then suddenly last night, the news broke with the statement from Israel's national security adviser saying that nobody would be released before Friday.

I've spoken to a government source this morning, who says Israel believes the deal will go ahead - both the hostage release and the truce. They say this is a logistical issue, but nobody is explaining what the logistical problem is.

But Qatar's foreign minister has said that talks are continuing today and they are progressing positively, and the date of entry of the ceasefire will be announced in the coming hours.

An update now from the north of Israel where for weeks now there has been heavy exchanges of fire over the border with Lebanon.

Israel Defense Forces (IDF) spokesperson Daniel Hagari has posted on X saying an aircraft "spotted and attacked" an anti-tank squad in the Zerait area.

At the same time, the IDF attacked the squad with artillery, he adds.

Overnight, a surface-to-air missile was launched at an IDF aircraft in Lebanese territory, he says, adding that the missile was "successfully intercepted" by Israeli air defence fighters.

Hagari says that in response , an IDF aircraft attacked the launcher from which the missile was launched".

Image source, Reuters

As we've been reporting, UK Foreign Secretary David Cameron is in Israel.

On his visit to Kibbutz Be’eri, he said: "I wanted to come here myself to see the horrific nature of the attacks you suffered on 7 October"

The foreign secretary urged those involved in talks over the deal to release hostages and temporarily pause fighting "to make sure that it happens".

"Today is a day when we hope to see this humanitarian pause", he said, "It's an opportunity to get hostages out and to get aid in".

An Israeli government source says they believe the deal will go ahead on Friday.

Cameron has meetings with Israeli politicians and families of some of the hostages scheduled for today.

As we've been reporting, Israel's military says its aerial strikes hit about 300 Hamas targets in the Gaza Strip in the past 24 hours.

These pictures show the aftermath of apparent strikes in Rafah, close to the border with Egypt, and Khan Younis.

As a reminder, both places are in the south of Gaza, where Israel has advised people to move to, saying it's safer than the north.

Israel has not commented on the specific incidents, but says its strikes target Hamas infrastructure.

Image source, Getty Images

Image source, Getty Images

Image source, Getty Images

Orla Guerin
Senior international correspondent, in Jerusalem

A government source tells me this morning that Israel believes the deal will go ahead tomorrow, and that the remaining issues are logistical.