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Knoxville Police are still trying to determine who owns the vehicle that sparked the fatal shooting of a man who attacked an officer who stopped to help him.

The shooting happened early Sunday morning on the West Hills exit ramp from I-40.

Two men were changing the tire on a KIA and KPD Officer David Gerlach stopped to see if they needed assistance. Investigators said one of the men, Ronald Carden, attacked Officer Gerlach.

Investigators said Gerlach tried to use his Taser to subdue Carden, but it didn't work. Carden had Gerlach pinned to the ground and was trying to pull Gerlach's gun out of the holster. Gerlach managed to keep control of the gun and fired multiple shots at Carden to save his own life. Carden was hit more than once in the upper body.

During the autopsy, a syringe was found Carden's shoe along with a Suboxone film in his pocket. Suboxone is used for the treatment of opiate addiction, but can also be abused like other prescription drugs.

Meanwhile, officers are still working to identify the owner of the KIA. The license plate was not registered to that car. It was reported missing Sunday afternoon. The KIA has not been reported stolen. Investigators cannot search the vehicle until the owner is located.

Update Sunday 3 p.m.

Authorities have released the name of the Knoxville man shot and killed after he reportedly attacked an officer early Sunday morning.

KPD said Ronald Carden, 45, attacked Officer David Gerlach, 26, who had pulled over on the I-40 West Ramp to help Carden and another man who were attempting to change a flat tire.

Editor's Note: Knoxville Police Department did not have a picture of Carden available at the time of this posting.

Darrell DeBusk, Public Information Officer with KPD, said Carden, who was recently released from prison and was on parole, told Officer Gerlach he wasn't going back to jail, just before he attacked.

Officer Gerlach used his taser, but Carden did not stop fighting.

According to KPD, when Carden tried to grab Officer Gerlach's gun, the officer shot him and killed him.

DeBusk said Carden has a long history of arrests dating back to the 80's. Those arrests range from property crimes to aggravated robbery and even a kidnapping arrest.

Gerlach has been with KPD since July 2011.

Carden's vehicle was towed from the scene and will be processed for additional evidence. An autopsy will be performed on Carden's body.

Original story
(WBIR-Knoxville) What started as an officer stopping to help a driver with a flat tire on I-40 escalated into a fatal officer-involved shooting, according to the Knoxville Police Department.

Police said around 3 a.m. Sunday, an officer pulled over to help two men who were trying to change a flat tire. While he was talking to the two men, one of them allegedly attacked the officer.

Darrell DeBusk, Public Information Officer with KPD, said the officer used his taser on the man, but the suspect did not stop trying to fight. When the man tried to take the officer's gun, the officer shot the man and killed him.

DeBusk said the suspect, who was recently released from prison and was on parole, told the officer he wasn't going back to jail just before he attacked.

Police said investigators are questioning the other man in the car.

The officer will be placed on leave with pay pending the result of the investigation, which is standard procedure for an officer-involved shooting

DeBusk said the name of the suspect will be released once family members are notified.

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