MILWAUKEE, Wis. (CNN) -- Milwaukee Police said multiple people are hurt after separate shootings Thursday night.
Police said officers initially responded to reports of shots fired just before 8 p.m. Thursday when one of the officers exchanged gunfire with an armed man. Investigators said that man fled the scene.
Once officers had the scene secured, they found four shooting victims in a nearby home. All four victims were hospitalized; their conditions are unknown.
During a press briefing, officers said this is not confirmed to be an officer-involved shooting.
Police said the victims were two women, who are 18 and 25, and two men, who are 65 and 19. Investigators said a fifth person showed up on his own at the hospital with gunshot wounds and they believe he is involved in the shooting but did not specify in what manor.
During Thursday night's press briefing, investigators said they are not sure if the officers gunfire struck anyone. Per company policy, the officer has been placed on administrative leave, pending the investigation.
No officers were injured.
As police were investigating that shooting, they were called to a reported double homicide, at a different location.
Detectives said two man, ages 30 and 39, were found dead with gunshot wounds while a man and woman, both ages 19, are alive but in critical condition.
Police said three guns were recovered at that scene. They have not released any details about potential suspects in this investigation.
This is a developing story and will be updated.