Brown University shooting investigators release new "enhanced" footage of person of interest

Police in Providence, Rhode Island, on Tuesday released a new image and what they described as "enhanced" videos of a person of interest in the deadly shooting at Brown University as the search for the gunman entered the fourth day. 

In several zoomed-in videos police say were captured on the East Side of Providence on Saturday afternoon, approximately two hours before the shooting, the person of interest is seen walking on a sidewalk and looking around. The person is wearing a face covering. 

Some of the footage released Tuesday by the Providence Police Department on social media appeared to be digitally enhanced versions of previously released videos. Police urged anyone with information to contact the FBI tip line online or at 401-272-3121.

"Even small details may be critical to this," police said.

The FBI also shared a timeline of when the videos were captured, including some videos that appear to have been obtained from residents' private cameras. The person of interest is seen from about 2 p.m. on Saturday until just after 4 p.m., around the time the shooting took place. 

Police said the individual was walking near Hope and Benevolent streets, just down the block from the Barus & Holley engineering building where the gunman opened fire.

Rhode Island Attorney General Peter Neronha said investigators have also obtained other videos that have not been released to the public.

"I want to be clear because later on there may be other videos that get released in the course of a prosecution. … They show things like chaos after the shooting. What they don't show is this person of interest," Neronha said at a news conference Tuesday.

An image released earlier Tuesday, though blurry, was the clearest picture of the person of interest released so far since the shooting that killed two Brown University students and wounded nine others. The FBI said the man is about 5-foot-8 with a stocky build. 

The bureau has offered a $50,000 reward for information leading to the identification, arrest and conviction of the gunman.

Two of the nine injured victims have been released from the hospital, while five are in critical stable condition, one is in critical condition and one is stable, according to Rhode Island Hospital.

The students killed in the attack were identified as Ella Cook, a sophomore from Alabama, and Mukhammad Aziz Umurzokov, an Uzbek American freshman.

"Both were brilliant and beloved — as members of our campus community, but even more by their friends and families," Brown's president, Christina H. Paxson, wrote in a letter Tuesday to the university community. "Our hearts continue to be with them in their profound sorrow."

Investigators say they are looking to interview anyone who was in the area of the shooting. They're also continuing to search the area for evidence that might lead to the gunman.

Meanwhile, Brown University says it has seen an increase in swatting calls since the shooting. The community has seen increased security presence, with restrictions to buildings and areas, but students say it will take effort and time for them to feel safe. 

"We were in a state where Brown felt incredibly safe, and that bubble of safeness was completely popped when we were violated by a shooter entering our campus," Talia Levine, a senior at Brown University who barricaded for four hours during the shooting, told CBS News.

At a news conference on Tuesday, Paxson said she has been "deeply saddened" to see people questioning the university's commitment to safety and security. 

"I understand that as time goes on, there is maybe a natural instinct to assign responsibility for a tragic event like this. Anxiety and fear is very natural. But the shooter is responsible," Paxson said. "Horrific gun violence took the lives of these students and hospitalized others and it's deeply sad and tragic that schools across the country are targets of violence, and Brown is no exception." 

• Gun Violence
• Mass Shooting
• Rhode Island