(LEXINGTON) -- A 75-year-old Port Huron woman, armed with a handgun inside her car, was taken into custody late Saturday afternoon after a 6-hour standoff in the Lexington Police Department parking lot. Sanilac County Sheriff Garry Biniecki says the incident began around 11:30 a.m. Saturday when Port Huron police officers tried to stop the woman for a traffic violation on Military Street in Port Huron. The pursuit went through Port Huron and north on M-25 into Sanilac County. During the chase, officers noted that the woman was waving a handgun around in the vehicle. The chase entered the Village of Lexington and the car turned west onto M-90 and then into the Lexington police and fire department parking lot. Officers set up a security perimeter around the parking lot and shut down traffic on M-25 and M-90. Negotiations were attempted for a number of hours and deputies say it appeared the woman was becoming agitated. Deputies and officers from Port Huron, St. Clair County, and the Sanilac County Special Response Teams inserted tear gas into the suspect vehicle, entered the car and took the woman into custody. The woman was transported to Port Huron Hospital for treatment of minor injuries and evaluation for possible other medical issues. Charges are pending following a review by the St. Clair County prosecutors office. Police, fire and ambulance agencies from St. Clair and Sanilac counties along with the State Police, DNR, and the U.S. Border Patrol were at the scene and assisted in the safe resolution of the incident.