DENVER — Police Friday were examining a "mountain of evidence" and developing a list of people to re-interview about the disappearance and death of a 12-year-old girl. Sixth-grader Kayleah Wilson's body was recovered this week from an irrigation ditch in an industrial area about a half-mile from her house. Authorities ruled Kayleah's death a homicide and say they know how she died, but they aren't releasing details. Police said they had no suspects but are looking at a range of individuals who had the time and opportunity to kill Kayleah and don't have good alibis. "We're reviewing every detail that we developed when this was a missing person investigation, deciding which lead could be more fruitful, then prioritizing which people to talk to first," Greeley Police spokesman Sgt.