SOUTH KINGSTOWN, R.I. — A former Providence police detective who in July admitted to assaulting his girlfriend in an incident that led to his resignation is now facing charges in that he assaulted his wife and held a gun to his own head.

The South Kingstown police charged John "Joe" Black, 46, who worked as a detective in the intelligence unit, early Thursday with simple assault and disorderly conduct, both domestic.

According to a police report, Laura Watson notified officers around 8 p.m. Wednesday that she and Black got into an argument and that he left the house after pointing a gun at his own head. She told officers that he was headed toward his boat "Wire Tap," which was moored just off Ram Point Marina.

The police, joined by Narragansett officers and that town's harbormaster, convened at the parking lot across from Stone Cove Marina, the report said. The harbormaster located Black's boat and he agreed to come ashore.

Once ashore, he was secured in protective custody based on Watson's account and taken to South County Hospital for an emergency mental health check, the police said.

According to the report, the police determined while at the hospital that Black, of 563 Allens Ave., South Kingstown, would be charged with the two domestic counts. The police did not detail the nature of the alleged domestic simple assault. He was detained overnight and pleaded not guilty at his arraignment Thursday. He was ordered not to contact Watson.

The report specified that the police seized three handguns, including a Sig Sauer, and three rifles, one of which shot pellets. His Providence police badges and law enforcement identification was also confiscated.

In April, Providence police arrested Black, who often worked undercover, in April and charged him with one count each of domestic simple assault and refusal to relinquish a telephone for allegedly assaulting 26-year-old Charlotte Wiseman in her Federal Hill apartment during an argument.

Wiseman told the police that she didn’t want to let Black in to her Atwells Avenue apartment, and that he assaulted her and tried to take her keys, then grabbed her phone when she wanted to call 911, the report said. She said she fought back, scratching Black and leaving him with a black eye.

Black in July pleaded no contest to a misdemeanor count of simple assault. In exchange for the plea, the charge was downgraded from domestic and a charge of refusing to relinquish the telephone was dismissed. The case against Black was filed for a year, meaning it would have been stricken from his record in a year if he remained in good standing with the law.

Weeks earlier, Black tendered his resignation “unconditionally and irrevocably” as of July 10 after an internal investigation.

Black had been with the Providence force since 2005, and had won numerous awards for arrests and narcotics investigations. He was one of three Providence officers who were shot and wounded by a suspect during a drug raid in 2009.