TOKYO—A man with a knife stabbed at least 10 passengers on a commuter train in Tokyo on Friday and was captured by police after fleeing, fire department officials and news reports said. NHK public television said one passenger was seriously injured. It said the suspect left his knife behind as he fled and later gave himself up at a convenience store. The Japanese capital is currently hosting the Olympics, which end Sunday. The Tokyo Fire Department said nine of the 10 injured passengers were taken to nearby hospitals, while the tenth was able to walk away. All of those injured were conscious, fire department officials said. A witness at a nearby station where the train stopped said passengers were rushing out of the carriages and shouting that there was a stabbing and asking for first aid. Another witness told NHK that he saw passengers smeared with blood come out of …