The family of Nia Wilson and their lawyer claimed at news conference Friday on the lawsuit against BART that the transit agency didn’t do anything when the suspect who allegedly stabbed the 18-year-old last month threatened two other women.

Wilson’s family lawyer said that suspect John Cowell, 27, “basically lived” on BART and was spotted with a knife by many riders. Cowell threatened two women directly with a knife, and when they attempted to report the incident, they were met with