CHICAGO — Charges have been filed against a Burbank man accused of robbing a Southwest Side pharmacy at gunpoint before leading police on a chase that spanned several counties.

According to police, 36-year-old Norbert Thigpen is facing two felony counts of armed robbery and discharge of a firearm and one felony count of aggravated fleeing from police.

Officers say the alleged robbery happened at a CVS Pharmacy in the 8600 block of South Cicero Avenue on the Southwest Side on Saturday afternoon.

Police say Thigpen allegedly walked into the business and held an employee up at gunpoint before demanding money from the register. The employee complied with the demands and after receiving the money, police say Thigpen then fired a shot into the ceiling of the business.

Currently, it is unclear why a shot was fired during the robbery, but officers say nobody was injured.

Following the robbery, Thigpen then allegedly led officers on a chase that carried into several counties before eventually coming to an end along Interstate 94 near Gurnee.

Officers say they made several attempts to stop the suspect during the pursuit, including using spike strips and attempting to close several highway off-ramps.

Wisconsin State Patrol troopers were waiting with spike strips in Kenosha County in case the suspect made it that far. Police said the man drove into Wisconsin during the chase but headed back into Illinois where he was taken into custody.

Thigpen is set to appear in court for a detention hearing on Monday.