A Russian regional airliner carrying three crew members crashed in a forested area near Moscow on Friday, killing all on board, Russian news agencies reported.

The plane was a Superjet 100 regional jet and was carrying out a "test flight" before crashing near the Russian city of Kolomna, the TASS news agency said.

The cause of the crash was not clear.

Mash, a Telegram channel close to Russian law enforcement, said the plane had been on a test flight after repairs and belonged to Gazpromavia, an airline owned by gas giant Gazprom. (Agencies)