Police swarmed a FedEx center where a shooter opened fire Tuesday morning, injuring at least six people at the package-sorting station north of Atlanta.

An active shooter at the suburban facility was reported to police around 5:54 a.m., Cobb County police spokesman Michael Bowman said. He said there were multiple injuries, but did not say if anyone was killed.

“The area around the building has been secured and the officers are now clearing the incident location,” Bowman said in an email. “This is still an active and fluid situation.”

Six people wounded at the FedEx station were taken to nearby Wellstar Kennestone hospital. One of them had injuries that were “possibly critical,” Marietta police spokesman David Baldwin said.

FedEx said the facility about 25 miles north of Atlanta is a hub where packages are sorted and loaded onto vehicles for delivery. It’s located next to the general aviation airport for suburban Cobb County.

The company was cooperating with police but had no details to release about the shootings Tuesday morning.

“We are aware from the authorities of the situation,” said Scott Fiedler, a FedEx spokesman. “Our primary concern is the safety and wellbeing of our team members, first responders and others affected.”

(AP)