TULSA, Okla. – A 73-year-old Oklahoma reserve sheriff’s deputy who authorities said fatally shot a suspect after confusing his stun gun and handgun was booked into the county jail Tuesday on a manslaughter charge.

Robert Bates surrendered to the Tulsa County Jail and was released after posting bond. Bates’ attorney, Clark Brewster, told reporters that his client would not make a statement. He then ushered the reserve deputy into an SUV.

The Tulsa County Sheriff’s Office said Bates, an insurance executive who was volunteering on an undercover operation in Tulsa, accidentally shot 44-year-old Eric Harris on April 2. Tulsa County District Attorney Steve Kunzweiler charged Bates on Monday with second-degree manslaughter, punishable by up to four years in prison.

A video of the incident recorded by a deputy with a sunglass camera and released Friday shows a deputy chase a tackle Harris, who authorities said tried to sell an illegal gun to an undercover officer.

A gunshot rang out as the deputy wrestled with Harris on the ground and a man says: “Oh, I shot him. I’m sorry.”

Harris was treated by medics at the scene and died at an area hospital.

Andre Harris, the victim’s brother, said he does not believe the shooting was racially motivated. Bates is white and Harris is black.

Tulsa Police Sgt. Jim Clark, who investigated the shooting as an independent consultant at the request of the sheriff’s office, concluded that Bates had been so engrossed in the stress of the moment that he did not think clearly about what he had in his hand.

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Reed reported from Little Rock, Arkansas.