A friend of Michael Brown is in a 'critical, unstable condition' after being shot by police when he used a stolen handgun to fire on officers during a protest to mark the one-year anniversary of the 18-year-old's controversial death.

Friend of Michael Brown shot by police in Ferguson after he used a stolen handgun to fire on officers during a protest to mark the one-year anniversary of the 18-year-old's controversial death

• GRAPHIC CONTENT WARNING: Harrowing video surfaced on Sunday night of a man who was shot in Ferguson
• Footage shows a black man lying face down with his hands cuffed behind his back and blood on his torso
• St. Louis County Police Chief Jon Belmar said the man had fired on four undercover police with a stolen handgun 
• Officers returned fire, leaving the suspect in a 'critical, unstable condition' and requiring emergency surgery
• The severely injured man has since been identified as 18-year-old Tyrone Harris Junior by his father
• Tyrone Harris Senior revealed that his son had been a 'real close' classmate with the late Michael Brown
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