SIDOARJO, Indonesia: Rescuers detected “no more signs of life” under the rubble of a collapsed Indonesian school where 59 people remain missing, an official said Thursday, raising fears no more survivors would be found. “We used high-tech equipment like thermal drones, and, scientifically, there were no more signs of life,” said Suharyanto, the head of the country’s disaster mitigation agency, during a press briefing at the site of Monday’s collapse in eastern Java.

Indonesia’s National Agency for Disaster Management says 77 victims taken to hospitals for treatment.

The rescue was temporarily halted on Tuesday as authorities say the building is at risk of further collapse.