PROVIDENCE, R.I. — The ongoing effort to find a man who walked onto Brown University 's campus during a busy exam season and shot nearly a dozen students in a crowded lecture hall has raised questions about the school's security systems and the urgency of the investigation itself.
A day after Saturday's mass shooting, officials said a person of interest taken into custody would be released without charges, leaving investigators with little actionable insight from the limited security video they had recovered and scrambling to develop new leads.
Law enforcement officials were still doing the most basic investigative work two days after the shooting that killed two students and wounded nine, canvassing local residences and businesses for security camera footage and looking for physical evidence. That's left students and some Providence residents frustrated at gaps in the university's security and camera systems that helped allow the shooter to disappear.
''The fact that we're in such a surveillance state but that wasn't used correctly at all is just so deeply frustrating,'' said Li Ding, a student at the nearby Rhode Island School of Design who dances on a Brown University team.
A petition for increased security
Ding is among hundreds of students who have signed a petition to increase security at school buildings, saying that officials need to do a better job keeping the campus secure against threats like active shooters.
''I think honestly, the students are doing a more effective job at taking care of each other than the police,'' Ding said.
Kristy dosReis, chief public information officer for the Providence Police Department, said that at no point did the investigation stand down even after officials appeared to have a breakthrough in the case, detaining a Wisconsin man who they now believe was not involved.