SIDOARJO, Indonesia — Rescuers wearing hard hats crawled into tight passages of concrete rubble, chipping away debris with hand tools to try to reach survivors days after they were trapped in Monday's collapse of an Islamic school's prayer hall in Indonesia.

Some of the survivors were communicating with the rescuers working to free them.

“How old are you, son?” a team of rescuers asked a student who was trapped.

“Sixteen," he replied, in a video released Wednesday by Indonesia’s Search and Rescue Agency.

The student confirmed to the rescuers that he was not hurt but his torso was stuck in the debris of the collapsed building.

“Be patient, OK? Haikal... where are you?” the rescuers reassured the older student while calling out to a 13-year-old boy.

“Yes! I'm here,” Haikal responded. W

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