SALT LAKE CITY (AP) — A federal judge is delaying the trial of a Utah man accused of running a multimillion operation selling powerful opioids disguised as prescription drugs.

U.S. District Judge Dale Kimball decided Friday that the trial of Aaron Michael Shamo will begin Aug. 12 to give defense attorneys more time to sort through additional evidence in the voluminous case.

Shamo is charged with making the pills in his suburban basement and selling them on the internet's dark web to people all over the country, at one point raking in $2.8 million in less than a year. The 2016 bust ranked among the largest of its kind in the country.

Shamo has pleaded not guilty to more than a dozen charges. Prosecutors have struck plea deals with others accused in the drug ring.