GURNEE, Illinois (AP) — Three people were injured in a shooting in a parking lot of an amusement park north of Chicago that sent visitors scrambling for safety, authorities said.

Officers responded about 7:50 pm Sunday after 911 calls reporting shots fired at Six Flags Great America, about 45 miles (72 kilometers) north of Chicago, the Gurnee Police Department said.

“The shooting … was not a random act, and appeared to be a targeted incident that occurred outside the park,” police said in a statement posted to Facebook.

According to an initial investigation, police said a white sedan entered the parking lot and drove toward the park’s front entrance. People got out of the car and shot at another person in the parking lot before driving away, police said.

Additional detail about the suspects, including the number of people who fired shots, wasn’t immediately released. Police were investigating.

A 17-year-old boy from Aurora, Illinois, had a thigh wound and a 19-year-old woman from Appleton, Wisconsin, had a leg wound, police said. They were taken to a hospital and their wounds were described as non-life-threatening. A third victim had a shoulder injury and declined to be taken to a hospital.

In a statement, Six Flags Great America said park security responded immediately along with Gurnee officers.

Gurnee is in Lake County, about 5 miles south of the Wisconsin border. It’s about 20 miles north of Highland Park, where seven people died in a mass shooting during a July Fourth parade.