Medan: A small aircraft with 18 people on board is feared to have crashed on Thursday in Indonesia's Sumatra island, officials said.
The Cassa 212, carrying 15 passengers and three crew, members was flying from Medan city in North Sumatra to the nearby province of Aceh when it lost contact with air traffic control, Bambang Ervan said.
"It took off at 7:18 (0018GMT) and was supposed to land at 8:00," the spokesman said, adding that a search and rescue team has been engaged in tracking the aircraft.
"Most probably it crashed as it sent an emergency signal," he said, adding it was not known whether there were foreigners on board.
Local search and rescue Chief Suhri Sinaga said that the aircraft sent an emergency signal in the Bahorok area of North Sumatra province.
"We are trying to locate the aircraft," he said.
A helicopter chartered by US giant Newmont Mining crashed on Sunday in central Indonesia, killing two people on board.
Earlier this month, an Australian and a Slovak pilot were killed when their small Cessna Grand Caravan aircraft, carrying fuel and food to a remote area in Papua province went down.