FAIRVIEW HEIGHTS, Ill. – One person was injured in a shooting Thursday at St. Clair Square Mall, according to the Fairview Heights Police Department.

The shooting happened around 4:00 p.m. Officers immediately responded to the scene and found one gunshot victim, Fairview Heights Police Chief Chris Locke said during a press conference.

Two people were taken into custody along Illinois Route 159 near the main mall entrance, Locke said. Police are still searching for a third person that may be involved but did not release any identifying information. Two handguns were also recovered.

The victim was in stable condition, taken to a local hospital, and then airlifted to a St. Louis trauma center. Police said the people involved knew each other.

“During our investigation, we learned the individuals who took part in this senseless act were known to each other,” Locke said. “This was not a random attack.”

The shooting reportedly happened outside of the Helzberg Diamonds store.

“Some kid comes running by saying, ‘Hey they’re shooting. You might want to take cove,'” one shopper said.

FOX 2 learned that the nearby JC Penney store went on lockdown as a result. A shopper inside J.C. Penney said she was told to stay inside the store. 

“We’re nervous,” she said. “It’s gunshots. We just came to do shopping.” 

We also spoke with a person who told us that he and about 10 other people hid in the back of a Champs store, waiting for the all-clear. Soon after two people were detained, police interviewed potential witnesses.  

By 5:20 p.m., Fairview Heights Police announced the mall had been shut down for the evening due to the ongoing investigation. Locke thanked the Illinois State Police and St. Clair County Sheriff’s Department as well as neighboring police departments in Belleville, O’Fallon, Swansea, and Caseyville for their assistance.

Anyone with additional information should contact the Fairview Police Department at 618-489-2100.