The lead singer of the rock band Nickelback has appealed his conviction on drunk driving charges, arguing a compulsory breathalyzer violated his rights.

The appeal, filed last month, argues the breathalyzer evidence should have been excluded from Chad Kroeger’s trial after the judge found the test was issued without “reasonable suspicion,” Kroeger’s lawyer, Marvin Stern, said.

Kroeger was found to have nearly double the legal limit of alcohol in his blood when he was pulled over for speeding in June 2006.

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