All 92 people on board a Russian military aircraft are feared dead after it crashed into the Black Sea. The plane disappeared from radar two minutes after taking off from Sochi at 05:25 (02:25 GMT), heading for Latakia in Syria. Debris and 11 bodies have been found, with no reports of survivors. The Tu-154 was carrying soldiers, reporters and 64 members of the famed Alexandrov military music ensemble who were to perform for Russian troops. More than 100 divers are involved in a round-the-clock search operation at the site of the crash, Russia's defence ministry says. Russia's transport minister says investigators are looking into an "entire spectrum'' of possible reasons the crash occurred, including the possibility of a terror attack. President Vladimir Putin has said Monday will be a day of national mourning.