Honduran authorities say three U.S. women have died in a traffic accident in the Central American nation.

Public Ministry morgue spokeswoman Isa Alvarado tells The Associated Press the deceased were 20, 21 and 45 years of age. Twelve more Americans were injured in Wednesday's crash. Their identities were not immediately released.

U.S.-based Global Brigades, which organizes international health and development missions, posted a notice on its website saying the accident involved a bus transporting "Columbia University students and other volunteers." It added that those killed were two students and a health-care professional.

Honduran newspaper La Prensa reported that the bus veered off a road and fell about 80 feet (25 meters) into a gully.

Alvarado said forensic workers were preparing the bodies to be returned to the United States.