Louisville deputy police chief Paul Humphrey said at a news conference the four injured victims were rushed to the hospital and that one was in critical condition.
The shooting occurred at Chickasaw Park, where the suspect began shooting into the crowd.
Humphrey said police currently have no witnesses to the shooting, but that hundreds of people were in the park at the time of the incident.
The incident comes days after another shooting in which a gunman opened fire on a bank in Louisville, killing five people.
“As of right now we have no witnesses,” Humphrey said
“This has been an unspeakable week of tragedy for our city,” Mayor Craig Greenberg said at the scene Saturday night, referring to a shooting on Monday in which a gunman killed five Louisville bank employees while live streaming the attack on Instagram.
“On Monday, we lost five of our fellow citizens to a horrific act of workplace gun violence,” Greenberg said.
“And now, five days later, we’re at another scene of a reckless act of gun violence.”
