Moscow (CNN) -- Twelve people were killed Wednesday when a military plane crashed in central Russia, authorities said.
The An-22 Antonov 'Antei' heavy transport plane crashed in the Tula region south of Moscow. The entire crew of 12 were killed, the Russian Investigative Committee said on its website.
Investigators have found one of the military plane's flight data recorders, said Sergey Zhukov, spokesman for the military branch of the investigative committee.
"Along with the 'black box,' the pilots' documents and some of their body parts were found at the crash site," Zhukov said.
The plane left the city of Voronezh for the Migalovo airport in the Tula region at about 9 p.m. Moscow time on Tuesday, the committee said. Its wreckage was found about five hours later, the state-run RIA Novosti news agency reported.
Russian officials said the plane was conducting a training flight.