Can I be convicted of a gun charge if I didn’t have a gun?

I was being arrested for possession of controlled substance after being frisked and handcuffed. I was taken to the precinct and charged with possession. The arresting officer left the precinct 10 minutes later before I was put in the holding cell. The officer returns claiming he found a gun in his squad car. I was charged with VUFA, possession of an illegal firearm and possession of controlled substance. I never had a gun. Can I be convicted of these charges based on this information?