Although some debris of the missing Indonesian passenger plane have been found, the search and rescue team still can neither locate the plane nor offer suggestion over the most possible cause of the accident, an official said Tuesday.

The National Transportation Safety Committee doesn't rule out possibility that the Boeing 737-400 has exploded in the air, but said there is no evidence to support the theory.

"If only we could find a burned seat, this could lead us to the first theory," the committee's deputy chairman Frans Wenas was quoted by leading news website Detikcom as saying.

Authorities have found part of the tail, life vests, lamps and oil spill believed to be those of the Boeing, which went missing on the New Year's Day with 102 people onboard during a journey from Surabaya in East Java to Manado in North Sulawesi.

The debris was found on the waters of Pare Pare, South Sulawesi province.

The second possibility is bad weather, which overturned the plane, he said.

The last, the plane suddenly sustained major damages such as metal fatigue.

"Regardless of the weather, there was a sudden structural damage in the plane, the tail was gone ... or the wings broke," he said.

Editor: Yan