State media reports of Tuesday's incident near Nanjing say at least three aboard the bus were injured and taken to a hospital. However, a city government spokesman who gave only his surname, Zhang, said all the hostages were successfully rescued and did not mention any injuries.
It wasn't clear if the hostage taker had been killed or merely arrested.
Zhang said the bus had been pulled over by police, and as they boarded the bus the hostage taker pulled out a knife and grabbed an 11-year-old girl.