Outcry is growing over the fatal shooting of a naked University of Alabama student by a campus police officer early on Saturday morning.

Gil Collar, 18, reportedly knocked on the window of the campus police station and charged at an officer who came out to investigate. The officer shot him dead.

It has also emerged that the shooting was caught on video. 

On the Facebook page for the Vanguard, the school's student newspaper, Collar's friends and classmates expressed shock and confusion that the officer felt the need to use deadly force on a young man they described as 'sweet' and 'easy going.'

'Gil went to my high school' wrote Melissa Mims, who said she was a good friend of Collar's sister Elisabeth and the rest of his family. 'Gil was the kind of guy who could put a smile on anyone's face, he never had any enemies and a lot of students and younger kids looked up to him. He really was a great guy and had very many friends.'

Parker Mozingo only met Collar once but he made a lasting impression. 

'He was a sweet guy who did not deserve this.He made one stupid decision last night but the officer that shot him, in my opinion, made a way worse mistake,' she wrote.

'Gil was unarmed, the officer had no right or reason to pull a gun on him.