The Philadelphia district attorney’s office on Monday threw its support behind a campaign to overturn the conviction of the rapper Meek Mill, the latest turn in a decade-old drug and guns conviction.

In a hearing before Judge Genece E. Brinkley, prosecutors said that Meek Mill’s 2008 conviction on drug and firearm charges should be vacated, pointing to questions about the credibility of his arresting officer.

Any decision to grant a new trial would have to be made by Judge Brinkley, who has overseen the rapper’s case for years and who sentenced him to prison in November for probation violations. She has scheduled another hearing for June, and declined to hear arguments on Monday to release the rapper on bail.

Still, supporters of Meek Mill, who had previously scheduled a rally outside the courthouse during the hearing, greeted the news with cheers.