CHICAGO - A Chicago man already facing federal charges was arrested earlier this month after Cook County sheriff’s police say they found a loaded gun with defaced serial numbers in his vehicle during a traffic stop.

What we know:

Sheriff’s police investigators were working in the South Side Washington Heights neighborhood on Oct. 2 when they stopped a Hyundai Tucson around 8:20 p.m. in the 9200 block of South Wallace Street. The vehicle was pulled over after allegedly blowing a stop sign.

Investigators say the driver, 37-year-old Maurice Frison, gave verbal consent to search his vehicle. During the search, they recovered a loaded firearm with its serial numbers defaced.

Frison did not have a FOID card or a concealed carry license, according to the sheriff’s office.

The Cook County S

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