Gunman dead after killing three in attack at Las Vegas university

Amanda Perez, left, is comforted by fellow student Alejandro Barron following a shooting on the University of Nevada Las Vegas campus (KM Cannon/AP)

Police in Las Vegas killed a gunman on Wednesday at the University of Nevada Las Vegas (UNLV) after a person opened fire on campus, killing three and critically wounding a fourth.

The identities of the gunman, those killed, and those injured have not been made public.