MARYLAND HEIGHTS, Mo. – One man is behind bars after he fatally shot a co-worker Wednesday at a business located in the 12000 block of Dorsett Road. Police tell FOX 2 the shooting happened inside the building after two employees got into an altercation.

According to the Maryland Heights Police Department, the suspect, a 23-year-old man, shot a 52-year-old man who was a co-worker. The shooting happened inside the Dobbs building.

“Any time something like this happens, it’s a tragedy,” said Bill Carson of the Maryland Heights Police Department. “Our heart goes out to the victim and his family, and all of the other employees that heard or witnessed different parts of this that have to live with that.”

Several officers responded to the situation at the store near the intersection of Dorsett and McKelvey roads. Police are looking at surveillance footage from the store and trying to talk to people who saw what happened.

Police set up a perimeter around the building early Wednesday afternoon and blocked people from entering the store.

The Maryland Heights Police Department will turn the case over to the St. Louis County Prosecuting Attorney’s Office, which expects to file charges.

This is a developing story. FOX 2 will update as more information becomes available.