Authorities have identified the 16-year-old boy accused of killing his parents, sister, and a family friend on New Year’s Eve.

Monmouth County Prosecutor Christopher J. Gramiccioni reportedly confirmed to the Daily News that Scott Kologi, 16, is suspected of killing the three adults and his 18-year-old sister with a semi-automatic rifle shortly before midnight on Sunday.

As CrimeOnline previously reported, Steven Kologi, 44, Linda Kologi, 42, Brittany Kologi, 18, and Mary Schultz, 70, who reportedly lived with the suspect’s grandfather, were killed in the shooting.

Scott’s older brother Steven Kologi, Jr., and his grandfather Adrian Kologi were reportedly at the home when the suspect opened fire but escaped unharmed.

Steven Kologi, Jr. addressed the tragedy in an Instagram post that was reportedly reposted by a friend on Facebook.

“My New Years resolution is to be as great of a parent as my parents were to me,” the surviving son wrote, according to the Daily News.

“Never once was I without a hot meal or a roof over my head … They made sure Christmas came every year although they struggled financially.”

The Daily News spoke by phone to the suspect’s grandmother and her husband ,

The grandmother, Carole Kologi-Zawacki, was reportedly in shock at the news of the horrific killings. Her husband, Gregory Zawacki, told the newspaper that Scott is autistic, following earlier comments from a neighbor and family friend who said he had special needs.

“We didn’t know they had a gun in the house,” Zawacki said, adding that his wife had spoken to her family within days of the quadruple homicide and that everything seemed fine.

Contrary to earlier reports that he was expected to be indicated as an adult, the suspect was reportedly charged as a juvenile with four counts of first-degree murder and a weapons charge, according to the Daily News. He is expected to appear in court on Tuesday.

[Feature image: Facebook/Brittany Kologi; Steven and Linda Kologi]