St. Louis, MO  (KTRS)  Three people are injured after gunfire rang out Sunday night at a south St. Louis park.

Police Chief Sam Dotson says the incident began when two men at Carondelet Park started arguing. One of the men shot the other man before fleeing.

The suspect was stopped by a park ranger, and they exchanged gunfire. The suspect was shot. He is said to be in critical condition.

A woman who was sitting on a park bench was grazed by a bullet during the gunfire.  The park ranger wasn’t injured.