A Vacaville middle school teacher is facing felony charges related to the alleged discovery of illegal drugs and a firearm in his vehicle earlier this month.

On Monday, Solano County prosecutors filed a felony complaint in Solano Count Superior Court against Willis Jepson Middle School teacher Bobby Dale Chambers, 53, of Chico. Chambers was arrested at school on May 9 after school officials received a tip that he had a weapon and illegal drugs inside his vehicle, according to Vacaville Unified School District officials.

The court filing accuses Chambers of possessing a firearm near a school and possession of a controlled substance with a firearm, both of which are felonies, prosecutors said. He is also charged with possession of less than one ounce of marijuana, an infraction.

Chambers is set to be arraigned in the Fairfield courtroom of Judge E. Bradley Nelson at 8:30 a.m. on May 30.

School officials said that the tip came from a former girlfriend, who further alleged that Chambers used illegal drugs while on campus. Officials said that they notified police of the accusations.

Vacaville police officials said that Chambers was contacted and consented to a search of his vehicle. During the search, officers reported they found a loaded handgun, cocaine, less than one ounce of marijuana, and additional ammunition in the vehicle.

Chambers , who has been a California teacher since 1999 and a VUSD teacher since 2007, was arrested without incident and booked into Solano County Jail. He remains out of custody after posting $40,000 bail.

John Niederkorn, superintendent of the Vacaville Unified School District said that the administration would be conducting its own investigation into the matter. Chambers has been placed on paid administrative leave.