KATHMANDU: A passenger bus turned turtle in Satdobato along the Ring Road on Wednesday morning. The bus (Ba 4 Kha 1078) heading towards Gwarko from Satdobato overturned, injuring at least three persons aboard, in Satdobato at around 7:15 am today, according to Police Constable Nawaraj Adhikari at the Metropolitan Traffic Police Office, Ramshahpath. No casualties have been reported. The preliminary investigation points to speed over the limit as the cause of the accident, traffic police informed. Meanwhile, vehicular movement has resumed along the road after the overturned vehicle was pulled to the road side, police informed.