THE LATEST IN WORKPLACE VIOLENCE: Officials: 2 military facilities attacked in Tennessee.

At least one gunman unleashed a barrage of gunfire at two military facilities Thursday in Tennessee, sending troops scrambling for safety in an Army recruiting office, officials said.

It was not immediately clear how many people may have been hurt. Maj. Paul Greenberg with the Office of U.S. Marine Corps Communication said “we cannot confirm any casualties at this time.”

Chattanooga police said in a tweet Thursday afternoon that the active shooter situation was over, though there was no word on what had happened to the suspect or suspects.

Mayor Andy Berke said at a news conference that there’s “an officer down” at a military reserve center. He did not release any other details. Berke called it a “very terrible situation.”

The U.S. Navy said in a tweet that there was a shooting at a Navy recruiting building on Amnicola Highway in Chattanooga.

A facility 7 miles away on Old Lee Highway also was attacked. Brian Lepley, a spokesman with the U.S. Army Recruiting Command in Fort Knox, Kentucky, said his recruiters there were told by law enforcement that the shooter was in a car, stopped in front of the facility, shot at the building and drove off.

The Army recruiters at the facility told Lepley they were not hurt and had evacuated; Lepley said he had no information about recruiters for the other branches at the facility.

A lot of conflicting information at the moment, so stay tuned.

UPDATE: 4 killed, 1 injured at Chattanooga military recruiting center.

ANOTHER UPDATE: “Two law enforcement sources told CBS News that the shooting suspect was identified as Muhammad Youssef Abdulazeez.”