Survivors of the Azerbaijan Airlines plane that crashed in Kazakhstan reported hearing thuds and explosions from outside the aircraft during the flight, as the cause of the deadly catastrophe remains under investigation.

Azerbaijan Airlines has suspended flights to multiple Russian airports in the wake of a deadly plane crash, which it attributed to "physical and technical external interference."

Experts say evidence in the Azerbaijan Airlines plane crash in Kazakhstan points to a possible midair explosion, not an encounter with a flock of birds.