The 83-year-old man who police said apparently killed his wife in a murder-suicide in Foster Village on Friday had changed over the years, from a friendly neighbor to one increasingly bad-­tempered and paranoid, neighbors said Saturday.

The killing took place at 4321 Punihi St., neighbors said. A neighbor and property tax records identified the couple, who had lived at the home for about a decade, as Winton Leong Sr. and his wife, Josephine.

Police said the double slaying happened sometime between 4:30 and 9:40 p.m. Friday. That night, officers were sent on a welfare check to the home and found Josephine, 82, lifeless with multiple injuries.

Winton was next to her with what appeared to be a self-inflicted fatal wound, police said.

Police did not give a motive, but said both were possibly in “ailing condition.”

A neighbor, who declined to give her name, said the couple’s grandson reported the incident after he stopped by and they didn’t respond.

She said the Leongs were friendly at first but after the two were in a car crash several years ago, their health began to decline and Winton’s personality changed.

He began yelling at others and accusing them of stealing, neighbors said, and they saw him point a handgun at a tenant living on his property.