Authorities give update in Brown University killings, ask public to watch new videos

Authorities have received hundreds of tips in the investigation of Saturday’s mass shooting, Oscar L. Perez Jr., the chief of the Providence, Rhode Island, police department. In a new collection of videos released by the Providence Police Department, authorities are asking the public to pay attention to body movements, posture, gait and other patterns to help identify the person of interest, Perez said in a Tuesday news conference.

Jake Tapper speaks with CNN chief law enforcement and intelligence analyst John Miller and CNN senior national security analyst Juliette Kayyem. #CNN #News