ARUSHA, Tanzania, Jan. 15 (Xinhua) -- At least 11 people have been killed and 6 others injured in a head-on collision between a minibus and two trailer trucks in north-western Tanzania's region of Kagera, police said on Monday.

Augustine Ollomi, Kagera regional police commander, said in an interview that the accident occurred on Sunday afternoon at around 6 p.m. in Nyangozi, Biharamulo District, about 1,200 km from the country's commercial capital Dar es Salaam.

Ollomi said overspeed driving of the minibus was the main cause of the deadly accident, which was heading from Tanzania's western region of Kigoma to Kahama town in Shinyanga Region, with 16 passengers on board.

Police said that 9 people, including the driver, died on the spot while other 2 passengers died soon after reaching the Biharamulo Designated Hospital.

Ollomi said that the 6 injured people were rushed to the district hospital and were responding well to treatment.