A Washington court has convicted a 21-year-old lesbian and her twin brother of aggravated assault while armed, which was listed as a hate crime, for an October 2013 attack that caused a gay male victim to suffer facial bone fractures and a broken wrist.

Christina Lucas, 21, who did not testify at trial, told police that she was a lesbian and therefore could not be accused of an anti-gay hate crime.

Christina, her brother Christopher Lucas and a group of men approached the unnamed victim about 12.30 am on 19 October 2013 after he left a party in Washington DC with two female friends.

In a statement, the US Attorney’s Office said

The male victim was knocked over on the sidewalk and punched and stomped multiple times by the Lucases and others in the group. Christina Lucas had an object in her hand and used it to cut the victim’s face while he was lying on the sidewalk.”

A police arrest affidavit says a witness told police that the assault followed a verbal altercation that began when Christina Lucas approached the male victim and called him a “faggot motherfucker.”

The witness, a woman who was with the male victim at the time, told police that Christopher Lucas punched her in the face when she “attempted to intercede” to assist the male victim, the affidavit says.

Christopher was also found guilty of simple assault for punching a woman in the face who tried to help the victim. The Lucases will be sentenced on 9 June.