JAKARTA, Indonesia (AP) Authorities said they determined the location of the crash site and black boxes of a Boeing 737-500 on Sunday, a day after the aircraft crashed into the Java Sea with 62 people on board shortly after taking off from Indonesias capital.

The head of Indonesias National Search and Rescue Agency, Bagus Puruhito, said officials believe they identified the location of the flight data recorder and cockpit voice recorder the so-called black boxes because emergency signals transmitted by the devices were detected by a navy ships sonar system.

Hopefully we can lift the black boxes in short time to determine the cause of the crash, military chief Hadi Tjahjanto said.

Earlier Sunday, search and rescue operations resulted in parts of the plane being found in the sea at a depth of 23 meters (75 feet), leading rescuers to continue searching the area.