A Russian passenger plane carrying 17 people has gone missing outside the Siberian city of Tomsk, local officials have said.
The regional branch of the Russian Emergencies Ministry said the Antonov-28 plane, which was travelling from the town of Kedrovy to Tomsk, disappeared from radars on Friday.
The emergencies office said the plane, which was being operated by regional airline SiLA, was carrying three crew members and 14 passengers, including four children.
The region’s governor Sergei Zhvachkin said two helicopters had been dispatched to search for the plane.
The flight crew hadn’t reported any problems before the plane disappeared, officials added.
But the plane’s emergency beacon activated, signalling that the aircraft had a forced landing or crashed.
The Antonov-28 is a small short-range, Soviet-designed turboprop used by many small carriers across Russia and some other countries.
The incident comes less than two weeks after a plane carrying 28 people crashed in the far east of the country.
The Antonov An-26 twin-engine turboprop – a similar type of plane to the Antonov-28 – missed a scheduled communication and disappeared from radar during its flight from the city of Petropavlovsk-Kamchatskiy.
The wreckage was later found on a coastal cliffside and in the sea.
Russian media reported that none of the six crew members or 22 passengers on board had survived.
The weather in the area was cloudy at the time the plane went missing, Russian news agencies reported.
The aircraft involved had reportedly been in service since 1982.
In 2012, another Antonov-28 slammed into a Kamchatka forest in 2012 in a crash that killed 10 people along the same route.
Investigators said both pilots were drunk at the time of the crash.
Russian aviation safety standards have improved in recent years but accidents, especially involving ageing planes in far-flung regions, are not uncommon.
The Soviet-era plane type, still used for military and civilian flights in some countries, has been involved in dozens of deadly crashes since it entered service around 50 years ago.