Nepal, Oct. 1 -- Around 91 people are believed to be still trapped under the ruins of a collapsed school on Indonesia's main island of Java, authorities said as rescue teams searched for survivors.

The multi-storey Islamic boarding school in the town of Sidoarjo suddenly gave way on Monday as students were gathered for afternoon prayers, according to local reports.

"Based on student attendance data, 91 people are suspected to be buried under building materials," National Disaster and Mitigation Agency spokesperson Abdul Muhari said in a statement late Tuesday.

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It earlier said three people died and 38 people were still unaccounted for.

Offic...