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.

Authorities knocked on doors in search of video and sifted through snow and dumpsters for other evidence that might lead them to the Brown University gunman, whose face was covered or not visible in f...

"We have a murderer out there, frankly," Neronha said.