Indonesian officials say a helicopter has spotted what is thought to be wreckage of the Russian Sukhoi Superjet plane that disappeared yesterday.
The Sukhoi Superjet 100 disappeared from radar screens 50 minutes after taking off from Jakarta for a brief demonstration flight.
Official said the helicopter had seen what it thought was debris on the side of a cliff near a dormant volcano.
About 50 people are said to have been on board the aircraft.
There was no information given about the fate of those on the plane, but a search and rescue operation is continuing in the area.
Eight Russian pilots and technicians, Indonesian airline representatives and journalists were among those on board the plane.