A woman has died following a shooting during a Martin Luther King Jr. Day car show in Florida, sheriff's officials said Tuesday.

The unidentified 29-year-old Fort Pierce native was at the MLK Day celebration in Fort Pierce, Fla., with her daughter on Monday when shots rang out between two rival gangs, St. Lucie County Sheriff's Office Chief Deputy Brian Hester said on Tuesday. 

In total, eight people were shot and four were injured attempting to flee the scene, Sheriff Ken Mascara said. 

"And now what was a shooting investigation has turned into a murder investigation," Mascara said. 

No arrests have been made as the sheriff's office collaborates with local, state and federal agencies to investigate the shooting, Hester said. 

Deputies said they believe there was more than one shooter. Investigators found over 50 shell casings from three different calibers of weapons at the scene, Hester said. 

Authorities asked anyone with any information to contact a local hotline and warned anyone against protecting anyone involved in the shooting. 

"Yesterday was MLK Day, a legacy built on nonviolence, and sadly we experienced violence in our community," Mascara added. "Our heartfelt sympathies go out to the young lady’s family who lost her life in this senseless act, and our community in general."

WPTV reported the shooting was preceded by an argument between two people.

The car show was listed as part of the city's Martin Luther King Jr. Day celebration.

“It was mass chaos as you can imagine when shots ring out with, you know, there were 1,000-plus people here at the event. People were just running in all directions,” Hester said.

The sheriff's office says two deputies were at the event on a detail and were able to respond to the incident right away. The sheriff's office says since Ellis Park is a county park, the agency has jurisdiction in that area. The responding deputies rendered aid to victims shortly after the shooting. 

Other people at the event rendered aid to victims as well. Some people transported victims to a local hospital in their cars.

"Multiple people were shot, it sounds like from our initial investigation here on scene there was a disagreement of some sort between two parties, and unfortunately, they chose to resolve that with guns,” said Hester.

Investigators say dozens of deputies are following up on leads throughout the Fort Pierce area.