Police arrested Reginald Anthony Klaiber, 24, of Greenbelt. He was charged with assault with a deadly weapon. Courtesy of the Washington Metropolitan Area Transit Authority. Police arrested Reginald Anthony Klaiber, 24, of Greenbelt. He was charged with assault with a deadly weapon. Photo courtesy of the Washington Metropolitan Area Transit Authority.

Updated at 9:35 p.m.

A 15-year-old Metro passenger suffered a minor stab wound on a Green Line train Wednesday afternoon, and the alleged assailant was arrested shortly afterward in the Fort Totten station in Northeast Washington, a transit authority spokeswoman said.

Metro Transit Police said the assailant may face stiffer penalties for a bias-motivated attack, since the victim is transgender and the attacker reportedly made comments about her gender identity immediately prior to the stabbing.

The incident occurred just after 4:30 p.m. aboard a Branch Avenue-bound Green Line train shortly before it arrived at Fort Totten, spokeswoman Caroline Laurin said. She said the victim, a transgender teenager who identifies as a female, suffered a wound on the left side of her back that was not life-threatening. She remained hospitalized on Wednesday night, and police said her condition was stable.

Police at the Fort Totten station arrested Reginald Anthony Klaiber, 24, of Greenbelt. He was charged with assault with a deadly weapon, a 3.5-inch folding knife. Under D.C. law, police said, he could face a sentence up to one and a half times longer if he is convicted of a hate crime.