Three D.C. police officers are suing the city’s top law enforcement officials, claiming their reputations and careers were damaged when they testified that the Attorney General’s Office relied on faulty breath analyzers to obtain drunk driving convictions. In the complaint filed this month, Officers Jose Rodriguez, Andrew Zabavsky and Benjamin Fetting say they were instructed last year by prosecutors to not answer questions when giving testimony in court regarding the accuracy of alcohol breath-analysis equipment used by the Metropolitan Police Department.

After they ignored the request last July, Zabavsky and Rodriguez learned they had been placed under investigation for following improper procedures during a prior DUI arrest, according to the complaint. It also said they were placed on an internal list of officers whose testimony would not be supported by the Attorney Generals Office.