A New Jersey man who claimed one of his multiple personalities was responsible for killing three family members has been sentenced to 40 years in prison.

Dwayne Wilson, of Jersey City, pleaded guilty in September to three counts of aggravated manslaughter and one count of aggravated assault.

Wilson claimed he watched as a homicidal personality named Kiko fatally stabbed his sister, niece and nephew and wounded another nephew in their Jersey City home in 2005.

A judge rejected defense arguments that Wilson shouldn't be held responsible because of his identity disorder.

He received 30-year terms for each manslaughter count, to be served concurrently. He got another 10-year term for assault.