Image source, Getty Images

At least five people have been killed and 22 injured after an attack at a state-owned aerospace company near the Turkish capital, Ankara.

Four of the victims were employees of the firm, Turkish Aerospace Industries, while another was a taxi drier, Turkey's vice-president says.

Officials there have described it as a "terror attack", and Interior Minister Ali Yerlikaya says two attackers - a man and a woman - have been "neutralised".

Yerlikaya says they were "most likely" related to the Kurdistan Workers' Party (PKK) - a Kurdish rebel group that is listed as a “terrorist organisation” by the UK government, as well as by the US and European Union.

We'll shortly be ending our live coverage, but for more on the story, you can read our article.

• Who are Kurdistan Workers' Party (PKK) rebels?
• Video shows attackers inside building during Ankara attack

Video appears to show attackers arriving at TAI buildingpublished at 21:56 British Summer Time 23 October

21:56 BST 23 October

by Emma Pengelly

Another video analysed by BBC Verify appears to show how two attackers arrived at an entrance to the TAI complex earlier today.

The footage shows a group walking along an entry road on the site, past a stationary yellow car. Then the front doors of the car open and two people, holding guns, get out.

It is not clear what happens next as the car conceals movements, but one of the individuals walking past falls to the ground as others flee, some with hands raised to their heads.

We see a body in the same position, next to the yellow car, in separate footage captured on CCTV later. It has not been possible for BBC Verify to analyse the natural audio of the footage because it is a recording of a recording.

Later, a photograph published by AFP shows a taxi of the same colour and shape as the yellow car seen in the video, being removed from the site.

Turkey's Vice-President Cevdet Yilmaz says four of the people killed were TAI employees, while the fifth was a taxi driver.

Earlier local media reports said the suspects had killed the taxi driver and taken his vehicle to carry out the attack. We previously shared with you an image of a yellow taxi that authorities allege was used by the attackers.

Meanwhile Interior Minister Ali Yerlikaya says seven special ops forces members were among the 22 who were injured in the attack.

We can bring you more images from the scene now, which show long queues of ambulances stacked outside the Turkish Aerospace Industries complex, as well as armed police patrolling the area.

Image source, Getty Images

Image source, Getty Images

Image source, Getty Images

Image source, Reuters

It’s now late evening in Turkey, and as authorities continue their investigations near Ankara. Here’s a short roundup of what we know so far.

• Turkish government officials say it is "likely" the attack was carried out by the Kurdish rebel group the Kurdistan Workers’ Party (PKK) - which has been fighting against the Turkish state since the 1980s. The PKK has not yet claimed responsibility for the attack
• Five people are dead, and 22 injured at the Turkish Aerospace Industries headquarters - a state-owned technology company located 17 miles north-west of Ankara
• Two suspects - a man and a woman - have been "neutralised" by security forces
• CCTV shows a large explosion and suspects opening fire inside and outside the aerospace building
• Turkish president Recep Tayyip Erdogan reacted to the news from Russia, where he is attending the Brics conference with Vladimir Putin, calling it a "vile" attack targeting "the survival of the country"

The US and EU's top diplomats have both issued statements condemning the attack near Ankara earlier.

"The United States stands with our ally Türkiye and strongly condemns today’s terrorist attack. My thoughts are with the victims and their families," US Secretary of State Antony Blinken says in a post on social media.

The EU's High Representative for Foreign Affairs, Josep Borrell, also posting on social media, says: "We strongly condemn terrorism in all its forms. The EU expresses solidarity with Türkiye in this difficult time."

Footage shows armed individuals approach building, as bodies lie in backgroundpublished at 20:14 British Summer Time 23 October

20:14 BST 23 October

By Nick Eardley

We’ve verified a second piece of footage from the attacks, by comparing it to what we know about the area. There are also other videos which show a similar area at a different time.

It shows two people carrying large guns. There are bodies in the background.

The two armed individuals then approach a turnstile which is at the edge of the Turkish Aerospace Industries complex.

It’s likely this is footage of an early stage of the attack, but BBC Verify hasn’t been able to confirm the exact time that this video was filmed.

Image source, Getty Images

We've received this image of what appears to be a yellow taxi being removed from the scene.

The Getty Images picture service says the car was alleged to have been used by the attackers.

As our diplomatic correspondent Paul Adams reported earlier, videos circulating on social media appear to show two attackers arriving at the gates of the defence and aerospace company facility in what looks to be a yellow taxi.

As a reminder: few details have been confirmed about the nature of the incident and how it unfolded.

Image source, EPA-EFE/REX/Shutterstock

The Turkish government has indicated that today's deadly attack in Ankara is “likely related” to the Kurdistan Workers’ Party (PKK) - but what it?

• Formed in the late 1970s, the group launched an armed struggle against the Turkish government in 1984
• In the 1990s, the group rolled back on its demands for an independent state, calling instead for more autonomy for the Kurds
• Fighting flared up again after a ceasefire ended in July 2015
• Since the truce ended, violence in south-eastern Turkey has led to thousands of deaths and caused many to be displaced, according to the UN

• The PKK is listed as a “terrorist organisation” by the UK government, as well as by the US and European Union

Read on for more detail about the group’s origins and activities

As we've just reported, the Turkish Interior Minister Ali Yerlikaya says today's attack is "most likely" related to the Kurdistan Workers' Party (PKK).

Shortly before Yerlikaya spoke, Turkish Defence Minister Yasar Guler also sought to blame the Kurdish rebel group, telling reporters: "We give these PKK members the punishment they deserve every time, but they never come to their senses."

We've not had official confirmation yet of who is responsible, and the PKK has not taken responsibility for the attack.

• Read more about the PKK and the recent debate in Turkey about the possibility of a new peace process

Image source, EPA

Turkish Interior Minister Ali Yerlikaya says the death toll from the attack has now risen to five.

He adds "the terrorist attack on [TAI] is most likely related to the PKK's [Kurdistan Workers' Party‘s] actions, this is our assessment."

"We will share the identifications and other evidence once they become clear," he says.

Hours on from the attack, emergency services continue to work at the scene.

In video taken from outside the building, blue and red flashing lights can be seen lighting up the streets, with a crowd of journalists and members of the public standing on the pavement.

A number of videos have emerged of the attack on a Turkish state-owned defence and aerospace company.

They show an attacker firing into the building, and an explosion as seen from outside – we've compiled them into a short video.

Pinar Ersoy
BBC Turkish Service

We still don't know who is responsible for the attack on a state-owned defence and aerospace company outside the Turkish capital.

But today's attack has taken place amid a debate in Turkey about reigniting peace talks with the PKK – a Kurdish rebel group, banned as a terrorist organisation in Turkey, the US and UK.

It also comes a day after government-ally Devlet Bahceli said PKK leader Abdullah Ocalan should announce the outlawed group’s "abolition" in parliament, which would suggest his release from prison.

Bahceli is a key player in Turkish politics, and his suggestion is considered to be significant given his opposition to previous peace talks.

The PKK has been fighting against the Turkish state for greater rights for the country’s significant Kurdish minority since the 1980s.

Ocalan, who founded the group, was arrested in 1999 and has been in a high security prison since.

A reminder: no group has claimed responsibility for the attack and few details about the nature of the incident have been confirmed.

• Four people have been killed and 14 wounded after attackers opened fire at a Turkish aerospace company near the capital, Ankara, in what officials are describing as a "terrorist attack"
• Two suspects - one man and one woman - have been "neutralised", Turkey's interior minister says. It's not clear whether other people were involved
• CCTV footage appears to show a gunman firing an assault rifle inside a Turkish Aerospace Industries building
• Turkish President Recep Tayyip Erdogan says he "condemns this vile terror attack", with other countries saying they stand in "solidarity" with Turkey
• One local journalist has told the BBC that relatives of employees are waiting near the building "trying to get information about their loved ones"

Turkish Aerospace Industries' general manager began making his way back to Ankara after news of the attack broke, according to Anadolu news agency.

It says Mehmet Demiroglu was at a high-profile defence fair in Istanbul at the time, but swiftly left with the rest of his delegation.

Germany - which has a large Turkish population - says its "solidarity goes out to our Turkish friends".

"We condemn all forms of terrorism in the strongest possible terms," the German foreign ministry says in a post on X.

The ministry says its embassy in Ankara and crisis response centre in Berlin are "monitoring the currently evolving situation very closely".

The US Embassy in Turkey has also posted on X, expressing its condolences to the families "of those lost and injured".

We've also heard from the Greek government. Its ministry of foreign affairs says that the attack should be "unequivocally condemned" and extends its condolences to victims' families.

Meanwhile, the UK embassy in Turkey says it "stands in solidarity" with its ally.

The mayor of Ankara says he is "deeply saddened" by the attack on the Turkish Aerospace Industries facility.

In a post on X, Mansur Yavas says he "wishes a speedy recovery" to the wounded.

"We condemn terrorism," he adds.

More now from Turkish president Recep Tayyip Erdogan, who says the attack on the Turkish Aerospace Industries (TAI) headquarters is a “vile attack targeting the survival of our country”.

In a lengthy statement recently shared on X, Erdogan stresses that security forces acted quickly to neutralise the threat.

"No terrorist organisation, no evil focus targeting our security will be able to achieve their goals," he says.

The president, who is currently meeting with Vladimir Putin at the Brics summit in Russia, says that he extends his best wishes to the employees of TAI, who he says are “the source of pride of our defence industry”.

Image source, BRICS-RUSSIA2024.RU/Reuters

Turkish president Recep Tayyip Erdogan has decried the attack, saying: "We have four martyrs and 14 wounded. I condemn this vile terror attack and wish God's mercy on our martyrs."

He made the comments while on a visit to Russia, where he is attending a summit hosted by President Vladimir Putin.

Erdogan headed to the Russian city of Kazan earlier today for the Brics summit of emerging economies, that includes India and China.

Speaking at the event, Putin condemned the attack on the aviation company near Ankara and expressed his "condolences", according to Reuters news agency.