Welcome to the NewsHour. There are early indications that it was a Russian air defense system

that may have brought down the Azerbaijan Airlines jet that crashed yesterday, a U.S. official

tells the news hour. But Moscow is warned against making, quote, hypotheses before investigators make

their verdict. Some of that speculation comes from damage to the aircraft's

tail section, which shows holes that could have been caused by shrapnel from an exploding air defense

missile. Stephanie Sy begins our coverage.

Eyewitness video shows the moment of impact.

Azerbaijan Airlines flight J2-8243 crash lands in Kazakhstan.

A passenger describes the experience.

Two times it tried to land, and on the third time something exploded.

In the minutes before landing, video shows the plane descending erratically.

Azerbaijani officials say by this point the pilot was flying without GPS and with communications jammed.

Video from a passenger on board shows oxygen masks deployed and what looks like a crack on a piece of the wing.

Relative calm among the 67 people on board and then this.

Fiery wreckage confronts these first responders.

More than half the people on the plane were killed in the crash landing. Yet dozens survived, shaken and badly injured.

When the plane crashed, my wife was sitting next to me.

I haven't seen my wife since the crash and I don't know where she is.

As the human losses are counted, investigators at the crash scene are homing in on the multiple

holes found on the jet's hole as possible clues. Azerbaijan officials say a preliminary probe

indicates the plane was struck by a Russian air defense system and its communications were paralyzed

by electronic warfare. The Azerbaijan Airlines flight was on

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