At least nine people were killed and 21 others hurt on Friday in a shooting rampage at a busy shopping district in Munich, Germany, police said.Police searched for attackers, found a man who had killed himself and concluded he was the only gunman, the police chief said.The unidentified gunman was an 18-year-old German-Iranian who had lived in Munich for more than two years, Chief Hubertus Andrae told reporters.No group has claimed responsibility and police have not provided a motive. Authorities said children were among the casualties.