Darren Wilson, the Ferguson, Missouri police officer who fatally shot 18-year-old Michael Brown, says he feared for his life the day of the incident.

On Aug. 9, Michael Brown was shot dead by 28-year-old Wilson sparking a national awareness of the incident while protesters demanded that the police officer get charged with the murder.

The white police officer said he felt like a powerless child sitting inside his patrol car while the black teenager punched through his open window, Reuters reports. A grand jury did not indict him after spending over three months deciding on the case.

Wilson did not speak publicly about the shooting, but documents released detail his testimony in which he said he felt like he was a 5-year-old boy holding on to Hulk Hogan as he wrestled with the 289-pound teen.

The cop told the jury that he spotted Brown walking in the middle of the street holding a pack of cigarillos that had been reported stolen from a store. When he tried to talk to Brown from his car, the teenage cursed at him then lunged towards him, he said.

After being punched in the face twice by Michael, the cop said he feared that a third would kill him, she grabbed for his gun, but then the teenager tried to take it from him.

The police officer then fired the gun from his car. It shattered the window ,and as Brown ran away, Wilson chased him, telling him to get on the ground.

Wilson said Brown refused to get down so he had to shoot at him multiple times from 10-feet away because he felt that Brown would kill him if he got any closer.

When the case got to the grand jury, there were over 70 hours of testimony from nearly 60 witnesses which many gave conflicting statements. Many accounts said that the un-armed teenager had his hands up in surrender and the cop aggressively approached him and shot him to death.

Wilson has resigned from his post.