NASHVILLE, Tenn. -- New details were learned Tuesday about how two suspects allegedly shot a veteran Metro police sergeant June 25.

Joseph Jackson and Courtney Logan are accused of shooting at 22-year veteran Metro Sgt. Mark Chesnut when the officer pulled them over on Interstate 40 in Bellevue for a seat belt violation against Logan.

In court testimony Tuesday, it was learned that Jackson was sitting in the back of the car when the two men were pulled over by Chesnut. Detective Norris Tarkington said Chesnut asked Logan to get out of the car.

Chesnut returned to his unmarked vehicle. Jackson got out of the vehicle the men were in and went to the cruiser once. He had a conversation with Chesnut before returning to his own vehicle, detectives said, to see if Chesnut was alone. He went back a second time to Chesnut and shot the sergeant.

Tarkington said that the officer was shot five times with a model 64 Smith and Wesson. Two shots hit Chesnut's vest and three hit his body. Detectives said a sixth shot was fired, but was a misfire.

Logan said he didn't see Jackson shoot the officer, but he heard the shots, Tarkington said. Officers said video shows Logan not only witnessed the shooting but smiled and almost laughed.

"It's very disturbing that this guy can call himself a human with the face he made," said Metro Police Chief Ronal Serpas. "They're in deep trouble, and I hope they go to prison for the rest of their natural life on earth, and then after their life on earth, I hope they go to prison in hell."

After the shooting, officers said, Jackson walked away from Chesnut's car before walking back toward it for a third time. At that time, Chesnut threw his car into reverse about 40 feet, trying to get away.

Tarkington said Jackson admitted to shooting the sergeant but didn't know why. Tarkington said Jackson told him he kept pulling the trigger and didn't know how many times he'd shot the officer.

"One of his statements was, 'Nothing I can do or say can justify what I did,'" said Tarkington of Jackson. "He said, 'I didn't have to shoot that officer.'"

"That's bull," said Serpas. "He realized the world was coming down around him, and he was trying to get out of it. He's not sorry for nothing. Neither one of those punks are sorry for anything."

At 3 a.m. the morning of the incident, Logan checked into a Travel Inn in Greenwood, Miss., two blocks from the eye clinic he helped Jackson escape. Jackson apparently used a cell phone he had in his prison cell to call Logan, his cousin, to arrange the escape. Logan fired shots in the eye clinic and put a gun to a female guard's head, ordering her to give him her gun and unlock Jackson.

"She said when he put the gun to her head, she would actually close her eyes thinking that he was getting ready to kill her," said Tarkington.

The weapon used in the shooting was stolen from a Mississippi prison guard and thrown into the passenger's side of Chesnut's car after the shooting.

A semi-automatic pistol, which wasn't used in the shooting, was found in the suspects' car during a search. Logan had two magazines of ammunition on his body that fit the pistol.

Police in Louisville, Ky., also seized a computer from Logan's house.

Bail for the two men is set at more than $300,000 each. The preliminary hearing was bound over to the grand jury.

Chesnut has since been released from the hospital and is now at a Nashville rehabilitation facility.