The Singapore navy on Sunday deployed detectors to assist Indonesia in its search for the missing Adam Air plane's black box.
Singapore's Defense Ministry said in a notification that the navy's four sets of Underwater Locator Beacon detectors and six personnel who will assist in operating the equipment departed for Indonesia's Makassar on Sunday afternoon.
The move came after the Indonesian National Transportation Safety Committee requested for help.
Earlier, Singapore had deployed a Fokker-50 aircraft to join in the search for the aircraft which went missing with 102 people aboard over Sulawesi on New Year's Day.
Some debris of the aircraft has been found in the waters in Makassar but the aircraft's body and black box have not been located.