A U.S. official tells NBC News there are early indications that the passenger plane that crashed in Kazakhstan may have been hit by a Russian anti-aircraft system. The official said if it turns out to be the case,

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 Azerbaijan Airlines Embraer 190 flight left Baku, Azerbaijan, on Christmas to Grozny, Russia. Instead, the plane crashed in Aktau, Kazakhstan.

Industry experts and Ukraine officials are suggesting that Russia likely is to blame for the Azerbaijan plane crash that killed dozens. NBC News' Daniele Hamamdjian reports on the ongoing investigation and what may have caused the crash. As a kid ...

The investigation on the crash of the Embraer E190 while attempting an emergency landing is still ongoing, however reports of a possible involvement of

An Azerbaijan Airlines Embraer 190 was en route from Azerbaijan's capital of Baku to the Russian city of Grozny when it crashed, killing 38 people onboard.

An Azerbaijan Airlines flight from the Azerbaijani capital of Baku to Russia crashed, hospitalizing survivors while dozens are feared dead.

An Azerbaijan Airlines flight that crashed in Kazakhstan on Wednesday was downed by a Russian air defense system, four sources in Azerbaijan with knowledge of the investigation told Reuters.

Moscow on Thursday warned against speculation that Russian air defenses may have caused the crash of an Azerbaijan Airlines plane in Kazakhstan this week that killed 38 people. Kremlin

Officials in Russia and Kazakhstan are urging people to wait for an investigation into the deadly Azerbaijan Airlines plane crash before assigning blame.

Russia and Kazakhstan have tried to calm speculation about the cause of the Azerbaijan Airlines plane crash, following claims it had been shot down by Russian air defence systems. On Thursday, Moscow urged calm as its foreign minister said it would be wrong to come to conclusions before an investigation into the crash was complete.