April 1 (UPI) -- At least 30 passengers and crew were killed when a Russian military transport plane went down during a routine flight over a remote, mountainous region of Crimea, the Russian Defense Ministry and Russian investigators said Wednesday.

Communication had been lost with the AN-26, a twin-engined prop plane made by Ukrainian aircraft manufacturer Antonov, before it crashed into a cliff at about 6 p.m. local time on Tuesday with seven crew and 23 passengers on board, said the state-run TASS news agency.

An earlier statement by investigators said there were six crew and 23 passengers.

A defense ministry search and rescue team, which discovered the crash site in a heavily forested, mountainous area about 30 miles northeast of Sevastopol, reported that there were no survivors.

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