Police are investigating the death of a teenager in Miller Place who police say was shot by a father trying to protect his son.

John White, 53, is accused of shooting 17-year-old Daniel Cicciaro to death after the teen showed up at his doorstep, threatening his son. Police say around 11:15 p.m. Wednesday, 19-year-old Aaron White had been kicked out of a party and was then followed to his home in Miller Place. According to police, Cicciaro had called and threatened Aaron White before showing up with four other teens. Police say White shot Cicciaro in the face with a handgun.

Police say none of the teens that showed up at the White?s house was armed, and believe an ongoing fued over a girl played a role in the incident. White is being held without bail.