An Embraer passenger jet flying from Azerbaijan to Russia crashed in Kazakhstan on Wednesday with 62 passengers and five crew on board, Kazakh authorities announced, saying 32 survivors had been rescued.

Azerbaijan Airlines flight J2-8243 had flown hundreds of miles off its scheduled route to crash on the opposite shore of the Caspian Sea near the city of Aktau after what Russia’s aviation watchdog said was an emergency that may have been caused by a bird strike.

Officials did not immediately explain why it had crossed the sea, but the crash came shortly after drone strikes hit southern Russia. Drone activity has shut airports in the area in the past and the nearest Russian airport on the plane’s flight path was closed on Wednesday morning.

Video of the crash showed the plane descending rapidly before bursting into flames as it hit the seashore, and thick black smoke then rising. Bloodied and bruised passengers could be seen stumbling from a piece of the fuselage that had remained intact.

Reuters was able to verify from visible landmarks that the video was filmed on the Caspian shore near Aktau.