The man police believe fatally shot an officer in Memphis, Tennessee turned himself in at a U.S. Marshals' office on Monday after an extensive manhunt.
Twenty-nine-year-old Tremaine Wilbourn is suspected of killing a police officer during a traffic stop over the weekend.
Memphis Police Director Toney Armstrong spoke to Wilbourn after he surrendered.
"He said 'I want you to know one thing,' and I said, 'What's that?' and he said 'One, I'm not a cold blooded killer, and two I am not a coward.' If you remember yesterday I called him a coward in a press conference, and that didn't set too well with him." said Armstrong.
Police say 33-year-old Sean Bolton was shot multiple times during a scuffle after he pulled up to a parked car and apparently interrupted a drug deal.
A first-degree murder warrant had been issued for Wilbourn who was suspected of being the passenger in the car.
The driver had previously turned himself in and was released without charge.
Police said Wilbourn was on supervised release from prison, where he had been serving a 10-year sentence for bank robbery.
Bolton, a former Marine, was the third Memphis officer to be killed in the past four years.