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 is accused of pistol-whipping 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.

Haggerty gave him a $50,000 bond. He's been in the Butler County Prison since Dec. 6, when he was arrested on a probation violation.

County Detective David Aldridge, who serves as the domestic violence coordinator for the district attorney's office, said he learned of the victim's PFA in December.

In seeking the protective order Dec. 2, the woman accused Lumley of showing up at her Butler home Nov. 26 and causing more than $10,000 in damages.

Before he arrived, according to court documents, he allegedly sent her threatening and derogatory texts. In all, he texted her 179 times that day, documents said.

“Glenn has been violent with me in the past and always carries a gun,” she said in her application. “I am afraid that another violent confrontation with him is imminent.”

Additionally, she mentioned in the application the previous alleged pistol-whipping incident.

Because of those allegations, Aldridge said in his affidavit that he reached out to the woman to find out “if there were any additional services of support that could be offered” to her.

She advised that she was concerned for her safety. She also admitted that she “has endured a lot of abuse at the hands of the defendant,” documents said.

The woman subsequently appeared at the district attorney's office Dec. 16 and talked with the detective. She said she and Lumley had been friends for about a year before their relationship turned romantic.

“She acknowledged that she knew of his past domestic violence issues and as time went on,” documents said, “it became more apparent that there were going to be problems.”

Aldridge said the woman also detailed the April 21 incident. While at her apartment, she recounted, the defendant became angry and held a gun to her head, authorities said.

“As she talked to him and tried to calm him down,” documents said, “she saw an opportunity to escape, and when she tried to get out of the door, he hit her upon the head with the pistol. She was bleeding badly and in pain and he continued to hit her.”

She said he eventually apologized to her, offered to clean her wounds and promised he would not hurt her again.

The woman had her injuries at the time documented in photos, but she kept what happened a secret.

She referred to her job and advised that she “knew all of the questions that would be asked,” documents said, “and believed at that time that it would cause her more problems than good, so she never reported it to the police nor sought medical attention.”

She eventually went to the dentist because of problems with her jaw, which was injured in the incident, investigators said.

“The dentist informed her that her jaw was dislocated and that her orbital bone was fractured,” documents said.

Lumley's preliminary hearing is scheduled Jan. 2 at the office of District Judge Kevin O'Donnell. Online court records did not indicate if he has an attorney.

The defendant's criminal history includes a conviction in a 1989 felony drug case in Allegheny County.

More notably, on Aug. 13, 2003, he shot his ex-wife with a .22-caliber rifle during an argument at their former marital home in Cherry Township. She was hospitalized and released five days after the shooting. He also fired a second shot at his ex-wife's mother, who also was at the house. That shot missed.

Prosecutors originally charged Lumley with top counts of attempted homicide. In 2006, he pleaded guilty, but mentally ill, to two counts of aggravated assault. He was sentenced to 7½ to 15 years in state prison followed by 10 years on probation.

He faces a probation violation hearing at 1 p.m. Monday in Courtroom 4.