KNOXVILLE, Tenn. (WATE) — The three suspects involved in a standoff at a store Tuesday afternoon in the Heiskell community have been identified, according to Knox County Sheriff Tom Spangler.

Of the three suspects, one, identified by KCSO as Drea McKennedy Overbay, is dead from what is believed to be a self-inflicted gunshot wound according to Sheriff Spangler. The other two, Christopher Lee Mincey, 19, and Katrina Marie Ortiz, 19, were arrested according to KCSO.

The incident began around 2:30 p.m., when an officer saw someone driving 80 mph near the Walmart on Clinton Highway and tried to stop them. Spangler said this led to a chase when two of the three people in the car, Mincy and Ortiz, were taken into custody.

Overbay attempted to get away, by reportedly attempting to hop into a dump truck before getting into the Dollar General on East Raccoon Valley Drive in Heiskell. The store’s manager barricaded themself and an employee inside the store’s office.

Dashcam video of the standoff. (Video by Frank Ruiz)

KCSO spokesperson Kimberly Glenn said that SWAT team personnel and negotiators were at the store, and Spangler said that the standoff lasted between 20 and 30 minutes in total.

Spangler said that Overbay was found with a self inflicted gun shot to the head. He also added that Overbay fired at an officer and the officer fired at the suspect, but he believed based on the location of the wound, the officer’s shot did not hit the suspect.

Ortiz is facing a charge of evading arrest according to the general sessions docket. Mincey is facing multiple charges, including evading arrest, reckless driving, and speeding the general sessions dockets say.

EDITOR’S NOTE: This story has been updated with additional information.