The Ukrainian cargo plane that crashed late Saturday in Greece was carrying 11.5 tons of Serbian weapons to Bangladesh, Serbian Defense Minister Nebojsa Stefanovic said on Sunday. 

Speaking at a press conference, Stefanovic confirmed that the owner of the plane is a Ukrainian company and that the producer of the weapons is the Serbian company "Valir", reports the Balkan Service of Radio Free Europe. 

All eight crew members of the plane lost their lives, Greek state television reported on Sunday. 

Stefanovic said the plane was carrying mines and other mines. He said that the plane was not on the way to Ukraine, that the weapons were not intended for Ukraine and that the Ukrainian company was the sole owner of the plane. 

Stefanovic rejected the claims of some media that the weapons were headed for Ukraine, saying they are "malicious and harmful to Serbia". 

The Antonov plane, operated by a Ukrainian airline, crashed late Saturday near the town of Kavalla in northern Greece. 

According to Greek state television, ERT, military and explosives experts, as well as experts from the Greek Atomic Energy Commission, are expected to use the drone before approaching the crash site, due to the possible toxicity of the payload. 

The police asked the journalists at the scene to wear masks, according to the state television report. 

"We are treating the cargo as a hazardous material," said an official from the fire brigade, Reuters reports. 

According to some reports, the pilot managed to inform the authorities about a problem in one of the plane's engines. He was then asked to land at Thessaloniki or Kavalla airport, media reports. 

After taking off for Kavalla, the plane crashed about 40 kilometers west of the city's airport, the Greek Civil Aviation Authority said. 

The plane crash was also confirmed by Flightradar.24 – a system that tracks aircraft in real time. "A Meridian An-12BK cargo plane crashed near Kavala in Greece, en route from Nis to Amman," Flightradar.24 said.