Convicted child murderer Arthur Ream bragged to fellow inmates about killing other people but flunked a polygraph test, police said Wednesday as the search for human remains in a wooded area in Macomb Township continued for a third day."The suspect in this case did brag about murdering four to six other people," Warren Police Commissioner Bill Dwyer told reporters along the edge of a 24-acre parcel south of 23 Mile, west of North Avenue, near the excavation site.