DALLAS -- Two Dallas Police Department officers are under criminal investigation.

A judge determined that they repeatedly lied in sworn testimony about a drug arrest they made back in December of 2011.

The officers found drugs, cash, and a gun at inside an apartment at a Red Bird-area complex. They arrested a man by the name of Melvin Williams.

But in a rare ruling, a Dallas judge questioned the credibility of the arresting officers and ordered the money returned.