Preliminary information from Russia's emergencies ministry states that an Antonov An-148 has crashed in Russia, killing six occupants.
While the details are sketchy, the accident is the first involving the newly-developed regional twinjet, deliveries of which only started in 2009.
The aircraft came down and caught fire 160km east of the city of Belgorod, says the ministry, at around 11:00 Moscow time today.
"According to preliminary data, six crew members were on board, all of whom died," it adds. The crash site is near a small town, Garbuzovo, south of Voronezh.
Voronezh is the location of the VASO airframer where the Russian-built examples of the An-148 are manufactured. The emergencies ministry says the aircraft was on a training flight at the time of the accident.
Source: Russian emergencies ministry
Rossiya became the first operator of the An-148 but has complained about the reliability of the type.
Russian authorities recently certified the stretched version of the aircraft, designated the An-158, which is capable of accommodating 99 passengers.
Unconfirmed reports indicate that the aircraft was being demonstrated for a delegation from Myanmar.