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.

Five students were rescued Wednesday, but the effort is racing the clock.

Disaster officials said Thursday morning that 59 people are still buried in the rubble.

The death toll was also confirmed Thursday to be five, not six, after data from hospitals was verified.