Eighteen people were killed when a commuter omnibus veered off the road and hit a tree, Zimbabwe state radio reported late Saturday. The accident happened about 100 kilometres north of Harare, according to dpa. Oliver Mandipaka, Zimbabwe's police spokesperson, told the radio that 16 people apparently died instantly while the other two died after being admitted to Mvurwi government hospital, about 80 km north of Harare. Mandipaka said preliminary investigation showed that something had happened to break the real wheel, which fell off the vehicle.