A 24-year-old Santa Rosa man was arrested early Sunday on multiple weapons charges after he was found in possession of a loaded gun, police said.

Santa Rosa police were called to the 200 block of B Street at 1:30 a.m. regarding a possible intoxicated driver in a tan Chevrolet SUV. A witness reported seeing the driver brandishing a gun at another person.

Officers later found the SUV on McMinn Avenue in southwest Santa Rosa. While they were talking to the driver, they saw a handgun in plain view inside, Sgt. Dan Marincik said. It did not have a round in the chamber but had an attached firearm magazine that was loaded, he said.

Officers arrested Inocensio Dunuan on suspicion of being a felon in possession of a firearm, possession of a firearm with an altered serial number, and other weapons charges. He also was held on suspicion of driving under the influence.

Dunuan was booked into Sonoma County Jail.

You can reach Staff Writer Meg McConahey at meg.mcconahey@pressdemocrat.com or 707-521-5204.