PANGKALAN BUN, Indonesia: Indonesian rescuers lifted the fuselage of the crashed AirAsia jetliner nearly to the water’s surface before it sank to the ocean floor again when the lifting balloons deflated Saturday, a setback in the effort to recover more of the victims’ remains.

Four bodies were discovered though around the area where dozens of divers were struggling with strong current and poor visibility to prepare to retrieve the 30-meter-long wreckage, said Suryadi Bambang Supriyadi, the operations chief at the National Search and Rescue Agency.

Divers reached the fuselage section for the first time on Friday and retrieved six bodies. A total of 69 bodies have now been recovered from AirAsia Flight 8501, which crashed Dec. 28 with 162 people on board while flying from Surabaya, Indonesia’s second largest city, to Singapore.

Authorities believe many of the other bodies are still inside the fuselage.

“We now need additional balloons,” Supriyadi said after Saturday’s setback.

He added that the cockpit was reported to be about 500 meters (yards) from the fuselage at a depth of 30 meters (100 feet) and the bodies of the pilot and co-pilot might be inside. “Divers would evacuate (them) if they are there,” he said.

Media reports said Saturday the fuselage was lifted to about 7 meters (23 feet) from the surface before some of the balloons failed.