Republican congressional challenger Rocky Raczkowski (roch-KOF’-skee) says he is suing incumbent Democratic U.S. Rep. Gary Peters over a campaign ad.

The ad airing recently in the Detroit area relates to a federal lawsuit against Raczkowski.

READ MORE: Ford Adding 450 Jobs To Meet Demand For New Electric Truck

The suit says he and his company destroyed ticket stubs to cover up the actual number of people who attended concerts in South Dakota in 2008.

The ad features people saying they don’t trust Raczkowski because of the lawsuit.

READ MORE: Michigan TV Weatherman Out After Refusing To Get Vaccine

Raczkowski said in a statement announcing the defamation lawsuit Monday that Peters showed “reckless disregard for the truth.”

Peters spokesman Dan Farough says the campaign stands by the ad.

Peters and Raczkowski are running in the 9th District.

MORE NEWS: MDOT Update: Ramp Closures On I-94, I-275 As Part Of Rebuilding I-275 Project

(Copyright 2010 by The Associated Press. All Rights Reserved.)