Two Sacramento residents were arrested Saturday near Truckee after a report that a vehicle’s passenger had discharged a firearm from his window as they entered westbound Interstate 80 from Hirschdale Road.

The search for the vehicle, a late-model Chevrolet Impala, began when a citizen flagged down a Truckee California Highway Patrol officer at I-80 and Hirschdale Road at 4:46 p.m., authorities said. The individual told the officer he wasn’t sure if he was being shot at or if the suspect was just randomly shooting out the window.

All available CHP Truckee units joined the search and located the car on westbound I-80, west of the Donner Lake interchange.

Jason Demetrius Johnson, 29, the alleged shooter, and Gracie Freeman, 37, were taken into custody without incident after being stopped at the Soda Springs off-ramp, according to a CHP report. Johnson was found to have three felony warrants out of Sacramento County.

Inside the vehicle, officers found two loaded handguns, methamphetamine and a loaded 15-round high-capacity magazine. The handgun that was discharged was a stolen .45-caliber semi-automatic pistol, the CHP said. A bindle of cocaine was discovered when the suspects were searched.

Johnson and Freeman were booked on suspicion of various weapon and drug-related charges and are being held without bail.