Authorities in central Iowa say there is no evidence of foul play or criminal activity in the death of a 14-year-old boy who collapsed on a bike trail.
The Marshalltown Police Department says Monday that emergency responders found 14-year-old Manuel Guillen unresponsive Friday night on a bike and walking trail system. He was transported to a local hospital, where he was pronounced dead.
Police say there is evidence suggesting Manuel had a previously unidentified medical problem that may have caused his death.
The case remains under investigation pending further medical testing.