BAKU, Dec 26 (Reuters) - An Azerbaijan Airlines flight

that crashed in Kazakhstan on Wednesday was downed by a Russian

air defence system, four sources in Azerbaijan with knowledge of

the investigation told Reuters.

An Embraer ( ERJ ) passenger jet crashed near the city of

Aktau in Kazakhstan on Wednesday, killing 38 people, after

diverting from an area of Russia in which Moscow has used air

defence systems against Ukrainian drone strikes in recent

months.