A 16-year-old boy opened fire on his entire family in their New Jersey home on New Year’s Eve, killing four people, including his parents and his 18-year-old sister.

The New York Daily News reports that a 16-year-old male suspect, who has not been identified, was taken into custody Sunday night after he allegedly used an assault rifle to kill his parents, his 18-year-old sister, and a 70-year-old family friend who also lived at the Long Branch home on the Jersey Shore. He reportedly began shooting just before midnight.

Among the dead are Steven Kologi, 44, Linda Kologi, 42, Brittany Kologi, 18, and family friend Mary Schultz, 70. The suspect’s brother and grandfather were also at the home, but were not injured in the shooting.

Authorities have not revealed a motive for the shooting. The suspect is expected to be arraigned as an adult on Monday and is facing four counts of murder and one count of possession of a weapon for unlawful purposes.

The teen reportedly surrendered peacefully after police arrived to the home.

“Thankfully it was uneventful,” Monmouth County Prosecutor Christopher Gramiccioni told reporters.

“It didn’t require any force.”

A Facebook page appearing to belong to Brittany Kologi indicates she had been visiting her family during a holiday break from college.

This is a developing story and will be updated as more information becomes available.

[Feature image: Facebook/Kologi Family]