The shocking video showing the fatal shooting of an unarmed black teen last month by Chicago police was released Friday.

Paul O'Neal, 18, was shot dead by Chicago police following a police chase. Officials released nine videos showing events leading up to the July 28 shooting, including shots being fired into a reportedly stolen car that was being driven away by O'Neal.

The videos show officers handcuffing and cursing at O'Neal as he lay wounded and bloody behind a house. He died from a gunshot wound to the back, authorities said.

The officer's body camera recorded all but the moment he opened fire on O'Neal, who was unarmed. Police say the officer who shot O'Neal violated department policy.

Sharon Fairley, head of the police oversight board that released the video footage, described it as "shocking and disturbing."

According the family's lawyer, they were so distraught after viewing the videos before their public release that they left the Independent Review Authority headquarters Friday without making any public comment.

Michael Oppenheimer, the lawyer for O'Neal's family, called the video footage "beyond horrific" and said he plans to call for a special prosecutor to look into the teen's shooting death.

Chicago police have warned the city of "civl unrest" and potential violence against law enforcement because of the video footage.

The videos can be viewed here.