NEW ORLEANS — A handcuffed prisoner in a moving police cruiser somehow managed to grab a gun, fatally shoot the officer at the wheel and escape from the vehicle, which careened into a utility pole at a busy intersection, police said Saturday.

Officer Daryle Holloway, 45, died at a hospital, police chief Michael Harrison said. Meanwhile, an intense manhunt was on for Travis Boys, 33, the suspect who had been arrested on an aggravated assault charge and was being taken to jail when he escaped.

The New Orleans Crimestoppers organization announced a $10,000 reward for information leading to Boys' arrest.

The shooting happened Saturday morning as Boys was handcuffed in the back seat of the vehicle. Boys managed to get his hands from behind his back to the front and obtain a weapon as well, Harrison told reporters at the scene in a video interview posted on the department's Facebook page.

Boys got to the front seat through an opening in the cage that separates the front and back seats and shot Holloway, Harrison said.

Department spokesman Tyler Gamble said police were trying to determine what weapon Boys used and how he obtained it, but do not believe Boys used the officer's gun.(AP)