It was nearly a year ago when Nia Wilson, 18, was murdered and her sister Lahtifa Wilson, 26, was injured in a “prison-style attack” on the MacArthur BART platform. An Alameda County Superior Court judge ruled Wednesday that the suspect in Wilson’s murder is mentally competent enough to stand trial.

Two sisters were attacked on BART Sunday night near the McArthur station in Oakland around 9:45 p.m., leaving one dead and one injured in a seemingly random double stabbing incident. The suspect is still at large.