ASTANA, Dec 26 (Reuters) - Kazakhstan's senate chairman

said on Thursday that the cause of the Azerbaijan Airlines plane

crash was still unknown.

"None of these countries - neither Azerbaijan, Russia nor

Kazakhstan - is interested in hiding information. All

information will be made available to the public," Ashimbayev

Maulen said.

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 that Moscow has recently

defended against Ukrainian drone attacks.