Livingston County Sheriff Steve Cox says his investigation of a former suspect in a Chillicothe woman's 1990 shooting death shows "plenty of probable cause to make an arrest."

Newly released investigative records claim Brandon Hagan told a California commodities investor with whom he was arguing that "he got away with murder and was not scared to do it again."

Robertson's neighbor Mark Woodworth was twice convicted of murder and faces a possible third trial, even though the Supreme Court vacated the most recent conviction.

Hagan did not immediately return phone calls seeking comment.

Cox says he can't press charges against Hagan until Woodworth's case is resolved. Hagan was the ex-boyfriend of the victim's oldest daughter. He was initially suspected in the killing but insisted he was elsewhere at the time.