According to authorities, a cargo jet that crashed in northern Greece was transporting 11 tonnes of weaponry, including landmines, to Bangladesh.
The Antonov-12 crash site has issued a warning to anyone living within two kilometres of the area to stay indoors.
When the plane crashed late on Saturday in the city of Kavala, it was travelling from Serbia to Jordan, killing all eight persons on board.
A large fireball and the burning airliner were also visible on eyewitness footage of the disaster.
Drones were employed to scan the crash site out of an abundance of caution, and according to Greek state-run TV, the army, explosives specialists, and Greek Atomic Energy Commission officials were waiting till it was declared safe before going there.
According to Northern Greece Fire Brigade Lieutenant General Marios Apostolidis, the current (air) measurements have not shown anything, but instability in the field has been noted.
So a special armed forces team must tell us what it is and whether we may approach the field. "In other words, heavy smoke and heat, as well as a white material that we do not recognise."
After experiencing an engine issue shortly after takeoff, the pilot allegedly sought an emergency landing at Kavala airport in Greece, but he was unable to make it to the runway.
Residents first observed the plane at at 19:45 GMT (22:45 local time).
Aimilia Tsaptanova, who witnessed the plane's descent, expressed amazement that their homes weren't damaged.
She described it as being covered in smoke, making an unidentifiable noise, and flying over a mountain. "It turned and flew beyond the peak before crashing into some fields.
"We were alarmed by the flames. Numerous automobiles arrived, but they were unable to get close due to the constant blasts."
According to Serbia's Neboja Stefanovic, the jet was carrying about 11 tonnes (11,000 lb) of weaponry built in Serbia to Bangladesh.
However, accounts of the types of weaponry on board are disputed.
The "illuminating mortar mines and training (mines)," according to Mr. Stefanovic, who also noted that the flight "had all required approvals in compliance with international standards."
Landmines were aboard, according to a director of the armaments trader Valir, who also informed the BBC.
For the training of the army and border guards, a representative for Bangladesh's military public relations office informed the BBC's Bengali station that the plane included mortar rounds purchased from Serbia.
Meridian, a Ukrainian freight airline, was flying the jet, which was scheduled to stop in Jordan, Saudi Arabia, and India before landing in Dhaka, the capital of Bangladesh. It is believed that the crew was Ukrainian.