A bomb evidently triggered by a cellphone exploded on a public bus in Guatemala, killing at least one person and injurin 17 on Sunday.

The incident occurred early Sunday morning in San Jose Pinula, a town located 22 kilometers (14 miles) from the capital.

Investigators with the National Civil Police and the Public Ministry were dispatched to the scene and found amid the bus wreckage an electrical cable, the remains of a cellphone, motorcycle batteries and a vehicle starter, leading authorities to preliminarily conclude that the blast was caused by a remote-controlled bomb.

The modus operandi was similar to the method used in bus attacks in 2010 and 2011 on the Quetzal route, the Interior Ministry reported, but - although the Mara 18 and Mara Salvatrucha gangs operate in the area - Interior Minister Francisco Rivas said that the transport company was not being extorted by the gangs.

The injured, among them three minors, were taken to Roosevelt Hospital in the capital with first and second degree burns.

One of the injured, Miguel Angel Lopez, 27, was in shock when admitted to the medical center with third degree burns, hospital sources told EFE.

The injured included eight men and three women, along with a 7-year-old boy, and two girls ages 2 and 5, although no information was available on the other two injured people. EFE