Des Moines police say they've detained a person they want to talk to about a recent homicide. Sgt. Paul Parizek says Randy Dean Miles Jr., 41, was found in Grand Forks, North Dakota. He says Miles will be interviewed by Des Moines detectives travelling to North Dakota. Miles isn't facing any charges right now. He was named Monday as a person of interstet in the death of Christopher Lenhart. Police say somebody intentionally set Lenhart on fire Friday in the 1400 block of henderson Ave. in Des Moines.