Police were called to the park to break up a large crowd that had gathered in the area.
A short while after later, a group of teenagers said they saw a man run past them with a gun, then heard multiple shots a few minutes later.
“We stayed and went about halfway up here, and we heard like 10 consecutive shots. It was all at the same time, like bang, bang, bang. And then we looked over here and there was a gentleman on the ground,” said witness Alex Gray.
The park was filled with people as shots rang out near the Big Four Bridge.
Witnesses said people ran in all directions to get away from the gunfire.
The three victims were found in separate areas of the park. All three were taken to University Hospital, where one died.
“This is the second homicide of the day as a result of this, and again another senseless — I know folks are tired of me saying that — but that’s simply what this is, another loss of life for individuals that appear to be very young,” police spokesman Dwight Mitchell said.
The two surviving victims were said to have non-life-threatening injuries.
Mitchell said the victims were all men. One victim was 18 and the other two were in their 20s.
A fourth person with a gunshot wound showed up at a hospital, but it is unknown if that person was shot at Waterfront Park.
Anyone with information on the shootings is asked to call the LMPD tip line at 502-574-LMPD.
LMPD will provide an update on the shootings at 4 p.m. Tuesday.
This story may be updated.