'Neo-Nazi' murders girlfriend's disapproving parents

A teenage "neo-Nazi" has allegedly murdered the parents of his 16-year-old ex-girlfriend because they urged her to leave him.

Scott Fricker, 48, and his wife, Buckley Kuhn-Fricker, 43, were shot dead after a Christmas celebration with their family on Friday when they found the 17-year-old in their daughter's bedroom, the Washington Post reported.

The boy allegedly opened fire, instantly killing both parents, before turning the gun on himself. He survived and has been charged with two counts of murder.

In the days prior, Ms Kuhn-Fricker reportedly had found posts on Twitter attributed to the boy praising Hilter, calling for a "white revolution", and criticising gay and Jewish people.

She was a staunch civil-rights advocate and had organised an intervention to stop the teenager brainwash her daughter to believe white-supremacist ideals.

The 16-year-old agreed after being educated about the atrocities of the Holocaust and Nazi regime.

The concerned mother sent screen shots of the posts to the couple's school principal.

"I would feel a little bad reporting him if his online access was to basically be a normal teen, but he is a monster, and I have no pity for people like that," Ms Kuhn-Fricker reportedly wrote.

"He made these choices. He is spreading hate."

The boy, who had been dating the victim's daughter since June, is fighting for life in hospital.

His family have refused to comment.