A Su-57 fifth-generation multirole fighter jet crashed in a forest area in Russia’s Far Eastern Khabarovsk Territory on Tuesday, Komsomolsk-on-Amur city administration source told TASS.

"The fighter jet crashed in taiga forest, far from Komsomolsk-on-Amur, during trials. The pilot ejected," an administration official said.

The pilot was not injured in the accident.

The source said the Sukhoi Su-57 (also known as T-50 or PAK FA) fifth-generation multirole combat aircraft crashed during manufacturer’s trials.

According to the Eastern Military District’s press service, none of military units in the region have Su-57 fighter jets in service.

A special commission has been established to investigate the causes of the Su-57 fighter jet crash in Russia’s Khabarovsk Region, the press service of the United Aircraft Corporation informed TASS.

The corporation confirmed that a Su-57 fighter jet had crashed today in Komsomolsk-on-Amur during a test flight 111 km away from the base airfield.