On the way back to its base in Turkey, the Akinci drone used its flight map to draw a crescent and a star, which are seen on the Turkish flag.

The Turkish state-run news agency, AA, said hundreds of thousands of people watched the route of the drone live on FlightRadar24 application. The same agency released a video of the "drawing" - see a still image above.

Turkey has been focusing on drone production for more than a decade. President Recep Tayyip Erdogan’s son-in-law’s company, which works in the defence industry, is a leading brand in the field.

The death of Iranian President Ebrahim Raisi has stirred a range of emotions across the world.

From protesters gathering outside the Iranian embassy in Berlin to flags flying at half-mast in Moscow, Beirut and elsewhere, the world continues to react to Raisi's death.

• The supreme leader, who has been Ayatollah Khamenei since 1989, is head of state and has authority over the police. He also controls the Islamic Revolution Guard Corps (IRGC) - which is responsible for national security - and its volunteer wing, the Basij Resistance Force

• The president is the top elected official and is responsible for the day-to-day running of the government, and also has influence over domestic policy and foreign affairs

• The president's interior ministry runs the national police force, but its commander is appointed and answerable to the supreme leader - this is the same for the IRGC and Basij
• The Guardian Council approves new laws and can veto them

We've just got news that Russian leader Vladimir Putin has spoken with the newly-appointed acting president Mohammad Mokhber, describing his predecessor President Raisi as a "reliable partner".

The Kremlin confirmed the phone call and said both sides stressed their "mutual intention to further strengthen Russian-Iranian interaction," according to Reuters.

Iran has been an important military ally of Russia since Moscow launched its full-scale invasion of Ukraine in 2022.

Earlier, Putin offered his condolences after news emerged that President Raisi had died in a helicopter crash. He described Raisi as a "true friend of Russia" and an "outstanding politician".

Several hours after Raisi and Amir-Abdollahian were confirmed dead, we have been hearing from the Western world:

• France extended its condolences with a brief foreign ministry statement. "France offers its condolences to the Islamic Republic of Iran following the death of President Ebrahim Raisi, Foreign Minister Hossein Amir Abdollahian and those accompanying them," the statement said

• European Union foreign policy chief Josep Borrell offered his condolences over the death Raisi and other Iranian officials in a helicopter crash, a few hours after reaction from Charles Michel

• International Atomic Energy Agency Director, Rafael Grossi, held a minute of silence after the news of the death of Raisi, during a speech at an international conference on nuclear security in Vienna

• Poland's President Andrzej Duda said he was "deeply moved by the news of the tragic death of the President of Iran". Remembering the 2010 plane crash which killed Polish President Lech Kaczynski, Duda said: "We know the feeling of shock and emptiness that remains in people's hearts and in the country after the sudden loss of the political and social elite, therefore, with special understanding, we join the victims' relatives and the Iranian nation in prayer and grief."

• NATO's spokesperson took to X, formerly Twitter, and offered condolences to the Iranian nation after the death of Raisi and Amir-Abdollahian, in a post written in Persian

New photos show rescue workers combing through the mountainous terrain at the crash site in north-west Iran.

As we've reported, the aircraft came down in foggy weather near the city of Varzaqan.

Here's a photo of newly-appointed interim president Mohammad Mokhber as he addresses a cabinet meeting in Tehran.

Mokhber, who was vice-president before taking on his new role, is known for being close to Supreme Leader Ali Khamenei.

The election of a new president will take place within the next 50 days.