PROVIDENCE: 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.

Police respond to an active shooting at Brown University, with multiple victims reported and a search ongoing for suspects.

Officials initially said a suspect was in custody, before retracting and saying search is on for a suspect or suspects