(Reuters) - Six people were hurt in a shooting at a FedEx Corp facility at a suburban Atlanta airport early on Tuesday, and the suspected shooter died from an apparent self-inflicted gunshot wound, police 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.

Officers continued to search the area mid-morning to ensure there were no additional safety threats, Bowman said.

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.

Fedex