Five people were killed after a shooting at a gas station in Missouri, including a police officer and the alleged gunman, police said Monday.

Police received calls of multiple shootings throughout the city starting at 11:24 p.m. CDT, including a call at 11:43 p.m. to a Kum & Go gas station where callers reported a vehicle crash and an armed suspect shooting customers and employees at the store, Springfield Police Chief Paul Williams said in a statement.

Williams said police believe one individual is responsible for each of the incidents.

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We have heavy hearts this morning following a tragic situation occurring overnight. Officer Chris Walsh lost his life and Officer Josiah Overton is recovering at a local hospital, after suffering a gunshot wound. 4 others lost their lives. https://t.co/pThcp7ds17 pic.twitter.com/djSLXrYR41 — Springfield PD (@SGFPolice) March 16, 2020

One of the first two officers, Christopher Walsh, to respond to the Kum & Go suffered a fatal gunshot wound and died at the hospital, according to police.

Another officer, Josiah Overton, is being treated for non-life threatening injuries at a local hospital.

Other officers responding to the scene removed the two injured officers and found the suspect dead from “an apparent self-inflicted gunshot wound,” Williams said. Officers also found three deceased individuals and one person with a gunshot wound.

The person with a wound is being treated at a local hospital, according to police.

“Both of these officers showed significant bravery and were heroic in their actions,” Williams said.