Six people were hurt in a shooting at a FedEx Corp facility at an airport in suburban Atlanta early on Tuesday, police and hospital officials said.

An active shooter was reported at the facility in Kennesaw, Georgia, about 30 miles northwest of Atlanta, just before 6 a.m. EST, said Cobb County Police spokesman Mike Bowman. The suspect died from self-inflicted gunshot wound, The Atlanta Journal-Constitution reported, citing police.

Six patients in varying conditions were taken to WellStar Kennestone Hospital in Marietta.

"Some were able to walk off the ambulance and others are in the operating room," said hospital spokesman Tyler Pearson.

A FedEx spokesman said the company was cooperating with authorities.

"FedEx is aware of the situation," said spokesman Ben Hunt. "Our primary concern is the safety and well-being of our team members, first responders and others affected."

Hundreds of police from multiple agencies had converged on the scene. Bowman said the area around the building had been secured, and officers were clearing the incident location.

"This is still an active and fluid situation," he said in a statement.

An employee at the facility told the Atlanta Journal-Constitution that his boss called him on Tuesday and told him not to worry about getting to work on time.

"(My boss) called me about 6 o'clock this morning saying there was a guy inside, shot the security guard," Michael Hogland, a driver at the FedEx facility, told the newspaper.