Indonesia's Sriwijaya Air lost contact with one of its passenger planes shortly after take-off from the capital Jakarta, the country's transport ministry said Saturday.
"A Sriwijaya (Air) plane from Jakarta to Pontianak (on Borneo island) with call sign SJY182 has lost contact," said ministry spokesman Adita Irawati.
"It last made contact at 2:40 pm (0740 GMT)."
It was unclear how many passengers and crew were aboard the Boeing 737-500, AFP reported.
Sriwijaya Air, an Indonesian airline, said in a statement it is still gathering more detailed information regarding the flight before it can make any statement, according to Reuters.