Russian air traffic control has lost contact with an An-24 passenger plane carrying nearly 50 people in the Amur region, according to Reuters. The aircraft, operated by Angara Airlines, vanished from radar while approaching the town of Tynda near the Chinese border.

Vasily Orlov, the Russian governor of the Amur region, said 43 passengers, including five children, and six crew members were believed to be on board, though emergency officials later gave a slightly lower estimate. A search operation is currently underway, Reuters reported.