St. Louis, MO (KTRS)  Two are dead and two are recovering, including a St. Louis police officer, after a shooting in south city.

Police say a man confronted his ex-girlfriend and her new boyfriend on the front porch of a home in the 3000 block of Miami Thursday night. That’s when he allegedly pulled out a gun and fatally shot them. A third person at the home was also shot.

Police say when officers arrived, the suspect opened fire on them. One officer was grazed by a bullet. The suspect took off on foot, but was taken into custody a short time later.

The names of the victims and the suspect haven’t been released.