The Jakarta Globe has published pictures taken by photojournalist Aditia Novansyah, external which appear to show gunmen firing at police. Warning, graphic material.

The UN's Environment Programme (UNEP) has confirmed that one of its employees was seriously injured in the attacks. 

The Dutch national, married with four children, is a renowned expert in forestry and ecosystems and was providing support to the Indonesian government in combating peat-land fires, the organisation said in a statement. 

Programme Director Achim Steiner said his colleague was "currently fighting for his life" and condemned "these senseless acts of terror".

Jakarta police chief Tito Karnavian also said the so-called Islamic State group was "definitely" behind the attack.

He claimed Indonesian Bahrun Naim, who is believed to be fighting with IS in Syria, was "planning this for a while". 

"He is behind the attack."

The National Police's deputy chief, Com Gen Budi Ganawan, previously admitted there is an IS support group in Solo, central Java, that had been in contact with Bahrun Naim in Syria. 

He said the police had received a threat from the group in December, promising to launch a "huge bomb concert" on New Year's Eve, but was unable to do so because of the huge security presence.

Jakarta police chief Tito Karnavian has given an update on the attacks. 

He said: 

• Five attackers were killed, three of them in a shoot-out in front of the Jakarta Theatre, two others in a suicide bomb at a police post near Starbucks  
• Two other civilians were also killed, one of them Canadian 
• Twenty people - including an Algerian - were wounded, including five police officers 

Indonesia has been hit by a number of large-scale terror attacks in recent years. Here's a list of them:

• Oct 12, 2002: Bali bomb attacks kill 202 people including 88 Australians and 28 Britons. Authorities blame Jemaah Islamiyah (JI)
• Aug 5, 2003: Car bomb at JW Marriott Hotel in Jakarta kills 12 people and wounds 150. 15 alleged members of JI convicted 
• Oct 1, 2005: Suicide bombers kill 23 at seafood cafes in Bali 
• July 7, 2009: Suicide bombers kill seven, wound 50 plus at Ritz-Carlton and JW Marriott hotels in Jakarta 
• Jan 14, 2016: Attackers set off bombs at a Starbucks cafe in Jakarta and shoot at police. Police say five attackers and two civilians killed.

An express deliveryman who witnessed the bomb attacks has told Reuters that the attackers were dressed in black and looked professional. 

"I saw the motorcycles rider take out a long gun and shoot at everybody at the site. They looked really professional judging by the way they fired," the witness called Reza said.

The Islamic State-linked media group Aamaaq has reported that IS fighters were behind the armed attacks in the Indonesian capital. 

It quoted an unspecified "source" as saying that the attacks targeted foreign nationals and the security forces charged with protecting them. 

However, there has so far been no official IS statement.

  ABC Indonesia correspondent Adam Harvey tweets a photo from the scene.  

There is still a great deal of confusion over the attacks that unfolded in Jakarta on Thursday morning. Here's a quick run-down of what we know so far:

The attacks began at around 10.30am local time with a blast outside the Starbucks coffee shop near the Sarinah shopping mall and a UN building. A nearby police post was also damaged. 

More gunfire and explosions were heard elsewhere in Jakarta, but it is not clear where those took place. 

At least seven people were killed, including five attackers.

The Indonesian authorities had been on high alert over the New Year amid warnings of a possible large-scale attack by the so-called Islamic State group.

 Indonesian political analyst Yohanes Sulaiman tells the New York Times, external that  the government had not done enough to contain Islamist radicals in recent years. 

He is quoted as saying the police had “done a good job in preventing such attacks, considering that Indonesia is kind of a messy place". 

"[But] what the government hasn’t been doing is to stop the radicalism."

Government minister Luhut Panjaitan has told reporters that it is still not clear whether the attack was carried out by militants of the  so-called Islamic State group.

"We don't know yet whether this is IS (Islamic State) linked or not," he said.

Mr Panjaitan said that although several of the attackers had been killed, the police and the military were still cautious.

"We are not sure whether there are more people [gunmen] out there, our investigation is ongoing," he said. 

Indonesian police have said that 19 people were injured in the attacks. Seven people were killed, including five attackers.

Australia's attorney-general George Brandis says that the government has offered law enforcement and intelligence assistance to Indonesia. Canberra and Jakarta have worked closely on counter-terrorism initiatives since the 2002 Bali bombings.

Another eyewitness, Australian Barry Kissan, was in same building as the Starbucks café, a few floors above, when he heard the blast. He told BBC Radio 4’s Today what happened:

Rob Phillips is an English teacher who says he lives 400m from where the attacks took place.