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LEWISVILLE, Ark. (AP) - An Oklahoma man has been formally charged with second-degree murder in the death of an Arkansas deputy sheriff who was killed in a traffic accident.

The Texarkana Gazette reported Saturday (http://bit.ly/1jqYfpT ) that 28-year-old Michael Lee Ackart of Tulsa was charged with murder and three counts of aggravated assault in Lafayette County Circuit Court in Lewisville.

STORY: Deputy sheriff killed in 3-car crash in Arkansas (http://on.kthv.com/1eMxbvK)

STORY: Man in car with Lafayette Co. deputy charged with 2nd degree murder (http://on.kthv.com/OsGdrJ)

Ackart has pleaded not guilty to the charges related to the March 17 death of Lafayette County Chief Deputy Sheriff Pete Richardson.

Authorities say Richardson was driving Ackart to a homeless shelter in Miller County when Ackart reached over and grabbed the steering wheel as Richardson was driving, causing Richardson to swerve into oncoming traffic and leading to a three-vehicle crash.

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Information from: Texarkana Gazette, http://www.texarkanagazette.com

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Information from: Texarkana Gazette, http://www.texarkanagazette.com

(Copyright 2014 The Associated Press. All rights reserved. This material may not be published, broadcast, rewritten or redistributed.)

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