A Russian Su-24 frontline bomber rolled off the runway on takeoff from Russia’s Hmeymim air base in Syria on Tuesday, Russian news agencies cited Russia’s defense ministry as saying, adding that the warplane’s crew died in the accident.

The crew, bound for a combat mission, failed to eject themselves from the aircraft. Warplanes of this type carry a crew of two pilots, Reuters reports.

According to reports from the scene, a technical fault was believed to be behind the accident, the defense ministry was cited as saying.