A Dorchester man police say is a known member of the Thetford Street Gang and a multi-convicted offender was arrested on firearm charges.

Police arrested Steve Stephen, 33, of Dorchester, late Wednesday night after they say they found a gun in a sock in a void behind an inside panel of a Dodge Durango he was driving. He was charged with a third offense of unlawful possession of a firearm, driving an uninsured motor vehicle and window obstruction.

Police wrote in their report that Stephen’s criminal record, which includes charges of murder, aggravated assaults and “numerous firearms charges,” including multiple firearms convictions in 2009 and 2014, prevented him from having a gun license in the state.

“Officers were aware that Stephen was an active member of the Thetford Street Gang,” the report added, “which has a significant history of gun violence within the Boston and Metro-Boston area.”

The arrest after 10:15 p.m. Wednesday was an interesting one, with the police report noting the defendant projectile vomiting after arrest and an unknown woman claiming to be his lawyer walking up and causing an “on scene disruption.”

A police unit made up of three members of the Boston Police Department Youth Violence Task Force and a member of their Massachusetts State Police counterpart, the MSP Gang Unit, were on patrol in the area of Talbot Avenue and Washington Street when they noticed the dark gray Dodge Durango “operating with excessively dark tint” and a registration that was revoked as of last September.

Later in the report, they noted that an analysis of the tinting showed it was at 3%, well below the state limit of 35%. But their initial perception of the tint as well as the revoked registration, the officers wrote, was reason enough to follow the vehicle onto Talbot Avenue and then onto Millet Street. They wrote that Stephen failed to stop at the stop sign, a charge the report notes he protested, so they pulled him over.

Police say they noticed that “several panels” in the vehicle “appeared to be off track and previously manipulated,” and they ordered Stephen out of the vehicle.

“Based on his significant violent firearm history, and nervous behaviors,” officer pat-frisked Stephen but found nothing. When they asked Stephen if he had any weapons or contraband in the vehicle, they wrote, he clammed up.

They searched the previously noted panels, which removed “effortlessly,” and allegedly found a black Bryco Arms Jennings 9mm pistol loaded with a 10-round magazine and a cartridge in the chamber.