A Turkish C-130 military cargo plane with at least 20 personnel on board crashed in Georgia on Tuesday after taking off from Azerbaijan, but the number of casualties and the cause of the incident were not immediately clear.

Initial video from the scene near the Azerbaijan border showed chunks of twisted metal strewn across a grassy knoll, with parts of the fuselage still ablaze and dark smoke rising into a clear sky. Fire engines stood nearby and a helicopter whirred overhead.

Footage circulating on social media appeared to show the plane corkscrewing towards the earth and then bursting into flames. Reuters could not immediately verify that footage.

Turkish President Recep Tayyip Erdogan interrupted a speech in Ankara to offer condolences for “our martyrs” — a term he regularly uses to describe not only combat deaths but also service personnel killed in the course of their general duties.

Erdogan, his office and the ministry did not say what caused the crash, and they did not provide a death toll. Local media said there were both Turkish and Azeri personnel on board the US-made aircraft but gave no numbers.

In a post on X, Prime Minister Shehbaz Sharif extended his condolences to Erdogan and the families of those on board the aircraft.

“[I am] saddened by the tragic crash of the Turkish C-130 aircraft in Georgia,” he wrote. Heartfelt condolences to my dear brother, President Recep Tayyip Erdogan, the families of those on board and to our Turkish brothers and sisters. Our thoughts and prayers are with them in this moment of grief.“

‘Loss of servicemen’

After a call with Erdogan, Azerbaijan’s President Ilham Aliyev said, according to an official readout, that he had discussed “the tragic news of the loss of servicemen” in the crash.

Turkey’s Defence Ministry said 20 Turkish personnel were on board, including the flight crew, but provided no additional details on possible passengers of other nationalities.

Turkey and Georgia said they were working to reach the site in the Sighnaghi municipality of Kakheti, a border region of floodplain forests and rolling hills.

In the Turkish capital Ankara, Erdogan was handed a note by his aides as he was finishing a speech.

“God willing, we will overcome this crash with minimum hardships. May God rest the souls of our martyrs, and let us be with them through our prayers,” he said.

Georgia’s Interpress news agency cited the country’s Interior Ministry as saying the incident was being investigated under a criminal code article covering air transport and the loss of life.

Azerbaijan, a close ally of Nato member Turkey, said the plane had taken off from the city of Ganja.

Lockheed Martin’s cargo, troop and equipment carrier

American firm Lockheed Martin, which makes the widely used C-130 Hercules, expressed its condolences to those affected by the crash and to Turkey’s Air Force and citizens.

“We are committed to supporting our customer in any way as they investigate,” said company spokesperson Chris Karns.

The C-130 Hercules is a cargo, troop and equipment carrier aircraft. It is described as a four-engine, turboprop military transport aircraft that can make use of unprepared runways for takeoffs and landings.

Its versatile airframe has enabled it to be used for other purposes as well, including as a gunship and for airborne assault and reconnaissance operations. It is now viewed as one of the main tactical airlifters for many militaries.