Three people are dead after a bus crash in Indianapolis Saturday.

The bus was returning from a church camp when it apparently lost it’s brakes, according to one witness.

“I asked (the bus driver), ‘Can I get you something?’ And he’s like, ‘My brakes just failed. My brakes went out.’ And so, that was very clear to me,” Duane Lloyd told Reuters.

Local media reports forty passengers were on board when the accident occurred.

The number of injuries is not known but a dozen ambulances were used to transport passengers. Two people are listed in critical condition.