The Azerbaijan Airlines plane flew hundreds of miles off its scheduled route from Baku to Grozny, and crashed on the eastern shore of the Caspian Sea. Russia's aviation watchdog said a bird strike might have been the cause.

The Malaysian Airlines flight was travelling at cruising altitude over eastern Ukraine on a journey from Amsterdam to Kuala Lumpur when it was shot down in July 2014. A pro-Russian militia had misidentified the plane as a Ukrainian military transport aircraft.

Airlines are avoiding Russian airspace after an Azerbaijan Airlines flight crashed on Wednesday, killing 38 passengers. The Embraer 190 jet was bound for Russia from Azerbaijan — but veered off course after sustaining some kind of damage over Russia. It managed to reach Aktau airport in Kazakhstan before crash-landing. 29 passengers survived.

In the crash’s aftermath, Azerbaijan has unleashed rare and stinging criticism of Russia, with the country’s president saying Moscow’s response has caused “surprise, regret and rightful indignation.”