On September 23, 2010, law enforcement authorities executed a search warrant at Johnson's residence. Over 900 grams of marijuana, $3,948 in cash, a .357 magnum handgun, and ammunition were seized at that time.
During his guilty plea, Johnson admitted that he was involved in a conspiracy to distribute crack cocaine and marijuana with Alvin Lee Cooper and Lovell Jonathan Flowers.
Johnson also admitted that the amount of drugs involved was at least 280 grams of crack and at least 60 kilograms of marijuana.
In a related case, Cooper was sentenced to 250 months imprisonment, and Flowers was sentenced to 180 months imprisonment. This investigation was conducted by the Davenport, Iowa, Police Department, and the United States Drug Enforcement Administration. The case was prosecuted by the United States Attorney's Office for the Southern District of Iowa.
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