Azerbaijan ? An Azerbaijan Airlines passenger plane with 23 people aboard crashed on the Caspian Sea coast and all aboard were believed killed, a police official said early today.

The police duty officer in the Sabunchi region north of the capital, Baku, said the wreckage was found along the shore. He declined to give his name because he was not authorized to act as a spokesman.

The plane was identified as an An-140, a twin-engine turboprop. It did not hit near any buildings, an official from the Baku transport police was quoted as saying by the RIA-Novosti news agency.

The plane disappeared from radar shortly after takeoff from Baku’s airport en route to Aktau, Kazakhstan, on the other side of the Caspian, two airport employees told The Associated Press. Both said there were 18 passengers aboard and one said there were also five crew members.