At least 56 people are dead after a bus plunged off a bridge Monday on the outskirts of Guatemala's capital, Guatemala City Fire Department spokesman Carlos Hernández told CBS News.

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

At least 51 people were killed as a bus plunged into a ravine early Monday in Guatemala City, officials said. At least 20 more were seriously injured, they said. City officials said the incident occurred when the bus veered off a highway and went into a ravine.