An Azerbaijani airliner has crashed in Kazakhstan after being diverted, killing 38 of 67 people on board. Some experts alleged that the plane went down after being hit by Russian air defense systems. Some things to know about the crash and the speculation about a possible cause:

An Azerbaijan Airlines flight travelling from Baku to Grozny has crashed in Kazakhstan with nearly 70 passengers onboard. Several survivors are in a critical condition. Source: Radio Liberty's Kazakhstan service;

Russians who reviewed the transcript of the crew's conversations from the Baku-Grozny flight themselves admit that the air crash was caused by their air defense systems (ADS), according to Andriy Kovalenko,