Mexican immigration authorities say 20 people were injured and one killed when a car crashed into a bus carrying Honduran deportees back to their homeland.

The bus was carrying 34 Hondurans from a Mexican detention center when the accident occurred early Thursday in neighboring Guatemala.

Mexico's National Immigration Institute said Guatemala provides security to such buses until they reach the Honduran border.

Mexico said 1,511 such bus runs were carried out in 2017 to Guatemala, Honduras and El Salvador without incident.