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CANTON, Ga. (CBSDFW.COM/AP) — A former Georgia police officer has been convicted on six of seven charges related to falsely claiming he received a military Purple Heart.

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News outlets reported that Shane Ladner was found guilty Tuesday of six counts of making a false statement related to his use of the honor to get free license plates — five counts for lying to the county tax commissioner’s office and one for lying to investigators.

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The county sheriff’s office conducted a six-week investigation into Ladner’s Purple Heart claims after he and his wife drew attention when they were injured during a 2013 wounded veterans’ parade in Midland, Texas. A freight train slammed into a parade float carrying the veterans. Four people were killed in the crash and more than a dozen others injured.

A sentencing date hasn’t been set. Ladner faces up to five years in prison for each count.

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(© Copyright 2017 CBS Broadcasting Inc. All Rights Reserved. The Associated Press contributed to this report.)