UPDATE: 11/28/17, 6:45 P.M. -
Sidney Aimsback of Great Falls is in custody after she allegedly stole a car at gunpoint in Helena and led police on a high-speed chase.
According to Lt. Corey Bailey of the Helena Police Department, at about 3:15 p.m. police officers were dispatched to the area of Alice Street and Runkle Parkway for a report of a person who had just stolen a vehicle at gunpoint.
The person - later identified as Aimsback - then drove away in the vehicle toward Broadwater County.
The vehicle was later spotted by Broadwater County Sheriff's deputies and was involved in a chase.
The chase continued through Broadwater County into Gallatin County with several law enforcement agencies involved.
The vehicle was finally stopped in the area of Willow Creek in Gallatin County where Aimsback was taken into custody.
She is now behind bars at the Gallatin County Detention Center.
The Helena Police Department says that in addition to pending charges for Tuesday's incident, Aimsback is also being held on a probation violation, robbery, and theft from the Helena Police Department's jurisdiction.
According to the Montana Department of Corrections, Aimsback has a conviction in Cascade County for robbery.
THREE FORKS - A high-speed chase over three counties ended in Three Forks Tuesday evening with the arrest of a woman who stole a vehicle at gunpoint in Helena.
According to Gallatin County Sheriff’s Office Capt. Jason Jarrett, shortly before 4 p.m. law enforcement from Broadwater County called for assistance in a pursuit of a Mitsubishi Outlander.
Gallatin County Sheriff deputies and Montana Highway Patrol troopers attempted to use tire deflation devices near Wheat Montana, which were partially effective. The driver was able to continue, however, at speeds reportedly in excess of 110 mph.
The driver headed into Three Forks by the high school with two tires being blown out and the wheels almost completely destroyed. The chase continued out to Old Yellowstone Trail and Buttleman Road.
The woman headed south before coming to a stop and then barricaded herself in the vehicle. Because she was armed, law enforcement negotiated her capture which took approximately 30 minutes.
The woman, yet to be identified, was taken into custody without injury at approximately 5:13 p.m.
She is currently being held at the Gallatin County Detention Facility by probation and parole with a $100,000 bond. Broadwater, Gallatin and Lewis and Clark counties are investigating the incident.
This is a developing story and will be updated as more information becomes available.
Additional reporting by Carly Garrison, MTN News.