Another case, the indictment of Northwest Baltimore car dealer Sam Brown, also has connections to the Redd case.
Brown, who appeared in the photographs with Warfield and Redd, pleaded guilty Tuesday to a single count of intending to deal heroin.
In Redd's case, the officer was caught on wiretaps speaking to Mamah in coded language, sometimes while he was on duty as a police officer.
At one point, Mamah asked Redd, "Did your brother like the car?" which investigators said was code referring to heroin.
Other times, the meaning of their conversations was plain. At one point apparently frustrated by the meager profits of the deal, Redd told Mamah, "I get a little piece and you get the whole shabangin."
Mamah said later in the same conversation, "I ain't going to lie to you man … we all eat these little peanut peanut until we hit the big brick."
Relatives of Redd who attended the hearing embraced each other afterward and declined to comment. U.S. District Judge William Quarles wished him luck as he was led out of the courtroom.
Baltimore Sun reporter Ian Duncan contributed to this article.