A SCHOOL packed with students crumbled without warning in Indonesia, leaving dozens trapped and sparking a frantic rescue operation.

At least 99 students were injured and one 13-year-old boy has been confirmed dead after the prayer hall at Al Khoziny Islamic Boarding School in Sidoarjo collapsed.

Officials say 65 more students - mostly boys aged 12 to 17 - are still believed to be buried beneath concrete slabs and twisted steel.

The number of dead is expected to rise as rescuers struggle through unstable debris.

Hundreds of rescuers — including disaster response teams, police and soldiers — worked through the night after the building came down during afternoon prayers on Monday afternoon.

They used breathing gear, cutting tools and stretchers to reach survivors while avoiding further

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