BUTLER TWP — Convicted of shooting his ex-wife in the stomach in northern Butler County 16 years ago, Arthur ”Glenn” Lumley is again in trouble with the law.

County detectives said Lumley, 62, of Liberty Township, Mercer County held a gun to a former girlfriend’s head in April and threatened to kill her at her Butler Township apartment.

He also pistol-whipped the 56-year-old woman, leaving her with a dislocated jaw and a fractured orbital bone during the same incident.

Because the victim did not immediately report what happened or seek medical treatment, the allegations only recently came to light, authorities said, after she sought — and was granted — a protection from abuse order against Lumley.

On Thursday, District Judge Sue Haggerty arraigned Lumley on felony charges of aggravated assault and prohibited possession of a firearm and a misdemeanor charge of terroristic threats.