APTOPIX Brown University Shooting

Authorities are again searching for the person seen in grainy video walking away from the Brown University shooting that killed two students and injured nine. Officials said late Sunday that they released a person of interest they had detained earlier in the day, finding no reason to keep him in custody. This setback left law enforcement without a known suspect. The shooting happened Saturday during a busy time on campus, causing chaos and a lockdown. During a news conference Monday, authorities released three new videos that showed a masked man in a dark jacket two hours before the attack. Although the footage didn’t show his face, the video provided the clearest images yet of the suspect.

An aspiring neurosurgeon and a student leader of Brown University's campus Republicans were …

Authorities have released a new video timeline and a slightly clearer image of the man suspected in the Brown University shooting. They provided no indication Tuesday that they were any closer to zeroing in on his identity. Investigators have been canvassing Providence homes, yards and dumpsters in search of videos or other clues. Saturday’s campus shooting killed two students and wounded nine others. In all of the videos made public, the suspect’s face was masked or turned away. Authorities have only been able to give a vague description of him. In the new video timeline, footage shows the man running along quiet streets before the attack.