Azerbaijan’s President Ilham Aliyev has accused Russia of accidentally downing an airliner on Christmas Day in a disaster that killed 38 people, and covering up the cause.

There are early indications that a Russian anti-aircraft system may have struck the Azerbaijan Airlines plane that crashed in Kazakhstan, killing dozens, a U.S. official told ABC News. There is new evidence that the passenger plane may have been shot down by a Russian surface-to-air missile from a Pantsir-S1 system,