LONG BEACH - The retrial of two men charged with using a trio of medical marijuana collectives as a cover for illegal drug sales could begin next month.

Defendants Joseph Grumbine and Joseph Byron appeared out of custody at the Long Beach Superior Court Tuesday morning for a pretrial hearing to discuss when both sides would be ready to start jury selection.

Byron, however, was the only one of the two accused to leave the courtroom. Grumbine was remanded to custody after being found in violation of the terms of his bond when he was recently stopped in Riverside and allegedly caught transporting eight ounces of marijuana for sale.

Long Beach Superior Court Judge Arthur Jean set his bail at $250,000.

He and Byron were both convicted earlier this year on all counts in their first trial, but the judge in that case threw out the jury's findings after admitting he erred when he sent a congratulatory letter to the prosecutor before sentencing.

Police and prosecutors argued in the first trial that the defendants used the collectives as profit-driven drug dealing operations run like stores with frequent flier cards, specials and discounts offered inside the businesses.

The defense insisted there was no illegal activity at the cooperatives, two of which were in Long Beach and one in Garden Grove.

Byron and Grumbine were ordered to return to the courthouse on Nov. 27 for another pretrial hearing. The trial is scheduled to begin within about two weeks of that date.

tracy.manzer@presstelegram.com, 562-714-2150, twitter.com/tmanzer