A shooting that left at least three wounded at Six Flags Great America in Gurnee prompted a large police and fire response Sunday evening. | Photo: Joe Shuman/J. Shuman Photography (2022)

Several police agencies, SWAT and the FBI were responding Sunday evening to a shooting that left multiple people shot at Six Flags Great America in Gurnee.

The Gurnee Fire Department and Gurnee Police Department responded around 7:50 p.m. Sunday to the theme park, located at 1 Six Flags Parkway in Gurnee.

Initial reports over the fire department radio indicated a report of an active shooter.

Lake County Sheriff’s Office Deputy Chief Christopher Covelli said the sheriff’s office is assisting Gurnee police at the scene.

A shooting that left at least three wounded at Six Flags Great America in Gurnee prompted a large police and fire response Sunday evening. | Photo: Willie Gillespie (@wgweather)

Covelli said the shooting occurred at the entrance of the park and there is no indication it was an active shooter.

At least three people were believed to have been shot, according to a source. One person was reported to have been shot in the leg.

Some people were reported to have non-gunshot injuries.

[Suggested Article]  Officers responding to shots fired call find deceased man who had been shot multiple times in Zion residence

At least six ambulances and many other fire apparatus were called to the scene.

Sources told Lake and McHenry County Scanner the shooting was possibly a drive-by and innocent bystanders were hit, while the intended targets were not hit by the gunfire.

A shooting that left at least three wounded at Six Flags Great America in Gurnee prompted a large police and fire response Sunday evening. | Photo: Joe Shuman/J. Shuman Photography (2022)

No suspects were believed to be in custody. The Gurnee Police Department has not released any information on the incident yet.

Six Flags Great America confirmed in a statement that the shots were fired from a single vehicle and that it fled the scene immediately.

Mutual aid police departments through the Northern Illinois Police Alarm System (NIPAS) also responded, according to radio traffic.

Some park patrons hid during the incident while others tried fleeing from the park, witnesses told Lake and McHenry County Scanner.

A shooting that left at least three wounded at Six Flags Great America in Gurnee prompted a large police and fire response Sunday evening. | Photo: Joe Shuman/J. Shuman Photography (2022)

Jamar P. Tuazon, who was at the theme park, said that he heard gunshots and rides started to stop minutes later.

[Suggested Article]  'Despicable act': Swastikas spray-painted onto over a dozen headstones at Jewish cemetery in Waukegan

Groups of people, including Tuazon and his family, started to hide.

He and others improvised weapons and started to plan in case they encountered a shooter.

“If those shooters come, you take the kids and run, you take the kids and run,” he told a mother.

“We armed ourselves with big rocks, as big as we could find,” Tuazon said.

A shooting that left at least three wounded at Six Flags Great America in Gurnee prompted a large police and fire response Sunday evening. | Photo: Joe Shuman/J. Shuman Photography (2022)

The group later saw two police officers and they began exiting the park.

A video posted on social media showed a large group of people trying to escape the park through the gates off Washington Street.

A family reunification site was set up at the security tower in the parking lot north of the park.

A SWAT team was conducting multiple sweeps of Six Flags following the incident.

This is a developing story. Check back later for updates.