An alleged robber was shot dead by Denver police at a gas station Monday night in an incident that also sent an officer to the hospital.

The officer, who suffered a non-fatal gunshot wound to the leg, was taken to Denver Health Medical Center and was in surgery as Denver Police Chief Ron Thomas was giving a briefing on the incident around 11 p.m. Monday.

“We’re all concerned about our brother officer, and so we’re thankful that he is going to survive,” Thomas said during the briefing, which was posted to the department’s social media accounts. “We’re all very concerned about him right now.”

The shooting, which took place at a Maverik in the 3200 block of South Parker Road, began when police received a call about a robbery from a witness outside the gas station’s convenience store at 8:45 p.m. Monday, Thomas said. When police arrived on-scene, they found the witness out front and were told that an armed person had locked themselves in the store with two employees.

The witness was a security guard operating outside the store, Thomas said.

As the five-to-six officers who responded were developing a plan outside the store, they heard gunshots coming from within and forced an entry inside, where they confronted the suspect and exchanged gunfire, Thomas said. The suspect was shot and later pronounced dead at Swedish Hospital.

The two store employees who were locked inside with the suspect suffered non-life-threatening gunshot wounds to their lower extremities, Thomas said. The alleged robber was carrying a semi-automatic handgun.

Investigators currently do not believe anyone else was involved in the incident, Thomas said. Aurora police also arrived on the scene after the Denver officers responded.

The shooting will be investigated by the Denver Police Department homicide unit in assistance with Colorado State Patrol and the Colorado Bureau of Investigation.