Philadelphia - An Irish-born crime-busting police commissioner ran down a purse snatcher while out jogging and held the suspect until patrol officers arrived, police said here yesterday. Mr John Timoney (49) was jogging through Philadelphia's affluent Rittenhouse Square area late on Friday when a resident stopped him and reported the crime. "Well, I am the police commissioner," he was quoted as saying before taking off after the suspect, a homeless man. Mr Timoney, a marathon runner who jogs six to seven miles a day, became commissioner in March amid widespread expectations he would bring to Philadelphia the same crime-fighting acumen he displayed in New York.