A New Jersey senior murdered his octogenarian wife before killing himself in a murder-suicide not seen before in the Garden State.

Michael Juskin, 100, reportedly murdered his 88-year-old wife Rosalia at their Elmwood Park home in Bergen County, Northern New Jersey. The man used an ax to murder his wife and then killed himself in the bathroom with a knife, according to tweets published by the Bergen County Prosecutor John Molinelli.

Molinelli explained that the couple had had a history of domestic abuse and that Juskin had killed his wife while she slept. The incident happened sometime on Sunday, April 5.

According to the Record, local police arrived on the scene when a family member arrived to the house on Monday, April 6 to discover the bodies of the elderly couple. Their neighbors said the couple tended to keep to themselves, but they would usually see Juskin walk the dog while his wife worked on the garden.

A family member, speaking on condition of anonymity, told the newspaper that Juskin suffered from dementia.

“Sometimes he was lucid and sometimes he wasn’t,” the family member said.

The Record reports police had stopped by the Juskin’s residence at least three times on domestic dispute calls. The last of the calls happened three months ago when Rosalia Juskin said he worried he could not longer care for her husband after he locked her in the basement.

Juskin may be the oldest man accused of murder. In 2011 a 96-year-old Florida woman became the oldest person in the country charged with murder after she shot her nephew.