Austrian police said Saturday they had arrested a man suspected of taking in his 13-year-old niece and sexually abusing her after she ran away from home. Reported missing since January 2008, the girl, now 15, was found safe on Friday at the home of a friend in the Austrian capital Vienna. Police said the 38-year-old man was suspected of sexually abusing a girl under the age of 15 but not of imprisoning her. After leaving her uncle's home, she stayed with friends before being traced via the Internet, police and reports said. 