Fairfax County police said a boy, 17, was charged with murder in connection with the shooting deaths of a couple inside their Reston, Virginia, home.
The teenager shot Scott Fricker, 48, and his wife, Buckley Kuhn-Fricker, 43, around 5 a.m. Friday before shooting himself, the police said.
The couple reportedly considered the teen to be unsafe and didn't want their daughter to see him anymore, according to local ABC affiliate WJLA-TV.
He managed to survive and is recovering at a local hospital where, according to the statement, he is listed in "life-threatening condition".
A friend who spoke on condition of anonymity to the Post recalled Kuhn-Fricker fretting over her daughter's relationship and saying, "We can't allow her to see someone associated with Nazis".
Kuhn-Fricker wrote to the teen's principal after she found a Twitter account that she believed was his, the Post reported.
"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", Kuhn-Fricker wrote in an email obtained by the Post.
Police say the teen knew the victims, who confronted the teen when he entered their home.
Kuhn-Fricker was a successful attorney and author who was a proponent for the elderly, according to her website. Janet Kuhn, Kuhn-Fricker's mother, told the Washington Post that her daughter told her over the summer that the boyfriend was very good at history and that her daughter asked, "Did you know that Jews are partly to blame for WWII?"
Kuhn said the late parents had told her about an image the boy allegedly shared on a social media account that depicted "a picture of a skeletal face, blood dripping".
Hours later, there was an early morning rendezvous between the Frickers' teen daughter and the suspect, Kuhn said. The teen shot and killed the parents before inflicting a wound on himself, but none of the other four family members in the house were injured. "I don't think there's anything else they could have done, but who could ever forsee anything this terrible?" she said.