The bus collided with other vehicles on a main bridge in Guatemala’s capital before falling into a ravine early Monday morning.

At least 51 people are dead after their bus plunged off a bridge Monday on the outskirts of Guatemala’s capital.

Authorities in Guatemala are investigating the horrific crash involving a passenger bus with 70 people on board outside Guatemala City, after it plowed through a safety guardrail, plunging 115 feet into a polluted ravine early Monday morning.