Story highlights The bus was carrying fans of the Rancagua-based O'Higgins soccer team

Among the casualties were 12 dead and 22 wounded, a police official said

The accident occurred when the bus driver lost control, the official said

At least 12 people were killed early Saturday when a bus carrying fans of one of Chile's top soccer teams careened off the side of the road south of the capital city of Santiago, Chile, authorities said.

The accident occurred at about 2 a.m. when the driver lost control on a mountain road near the town of Tome and the bus plummeted about 30 meters (98.4 feet), Felipe Martinez Parra, a regional police officer, said.

The bus was carrying 45 fans of the O'Higgins soccer team, from the city of Rancagua.

At least 22 people were wounded in the accident, Martinez Parra said.

The fans had just attended a game in Talcahuano where O'Higgins defeated the hometown team, Huachipato, 2-0.