Police investigating the fatal shootings of four people at an Ohio home say they've arrested a teenager on murder and kidnapping charges. Columbus police, who have not provided a motive for the slayings, say the suspect is a 16-year-old boy. Authorities responded to a report Saturday of a female with blood on her, and officers found a teenage girl injured outside the home, then discovered the four dead inside the residence. The girl was treated at a hospital and released. The victims have been identified as 41-year-old Michael Ballour; 36-year-old Daniel Sharp; 35-year-old Angela D. Harrison; and 18-year-old Tyajah Nelson. (More Columbus, Ohio stories.)