A head-on collision between two buses in Ghana has killed at least 31 people, the West African country's news agency reported on Saturday. At least 30 others were injured in the accident late Friday near Kogni, 650 kilometers north of the capital Accra, Ibrahim Abubakar at the Tamale Teaching Hospital told the Ghana News Agency. According to a witness quoted in the report, one of the buses was overtaking a motorcycle when the collision occurred. According to dpa, the drivers of both buses were reported killed.