Six persons, including three children, were killed and 15 others injured when a luxury bus in which they were travelling overturned on the Tarapur-Vataman road at Anand in Gujrat. Police said today that the incident took place near Khanpur village in Tarapur taluka of the district when the bus was proceeding to Rajula from Surat. The deceased have not been identified yet and the injured have been admitted to the Tarapur Primary Health Centre.