The U.S. Navy tweeted Thursday that there has been a shooting at a Navy reserve center on Amnicola Highway in Chattanooga, Tennessee. The Navy also said it was investigating a shooting at another Navy building in the city.
One officer is "down" in connection with the shooting, Chattanooga Mayor Andy Berke told reporters.
He was not specific about the officer's condition.
"This is a very, very terrible situation and we need to go figure out how we can handle it," he said.
Meanwhile, a witness in Chattanooga told CNN that she saw a gunman fire shots at a building that houses military recruiting offices Thursday morning.
The witness, Gina Mule, said she was watching through a window from a restaurant where she works as a server. In an earlier account, she said she saw a man with "a high-powered rifle" fire multiple shots around 10:50 a.m. ET.
Authorities were investigating an "active shooter incident" late Thursday morning in Chattanooga, Tennessee, Fire Chief Randy Jackson said.
"Horrific incident in our community," tweeted Chattanooga Mayor Andy Berke. "We will release details as they are confirmed. Prayers to all those affected."
Officials gave conflicting information about where exactly the shooting happened.
Jackson said paramedics were standing by but had not transported anyone at this time.
Photos posted on Twitter by media outlets showed police blocking a road and a large number of patrol cars.
A witness told CNN that she saw a man with "a high-powered rifle" fire multiple shots at a military recruiting center, and that he had been in a silver Mustang. She said she was watching through a window from inside a restaurant.
Gina Mule said she heard "Pow, pow, pow!" around 10:50 a.m. ET.
"I don't know how many shots he fired, but it was a lot," she said.
Chattanooga State University asked people on its main campus to stay inside because of a "confirmed shooting," the school said on Twitter.