A Sriwijaya Air plane carrying 62 passengers on board is believed to have crashed into the sea shortly after taking off from Jakarta.
Local media reported that the Boeing 737 lost contact with air traffic control in the capital Jakarta with flight tracking data showing it plunged into a steep dive just minutes after take-off.
The Boeing 737-500 disappeared from radar screens at 2:30 pm (0730 GMT).
Indonesian Transport Minister Budi Karya told a news conference that 62 people had been aboard, including 12 crew.
