At least four people were killed and 14 injured after a gunman opened fire at Fort Hood Army base in Killeen, Texas, The New York Times reports.
Fort Hood said police had responded to the shooting, which began around 4:25 p.m. local time, according to Ryan Wood, a producer at WFAA Channel 8.
The situation was still considered “active” as military officials told NBC News a possible second possible shooter was being sought.
President Obama, who was travelling in Chicago and following the situation, told Los Angeles Times “we’re heartbroken something like this might have happened again.”
At 340 square miles, Fort Hood is the largest U.S. military installation, according to NBC News.
KCEN has a livestream of coverage, and a press conference is soon to be underway at the base.
This story is developing and will be updated as we learn more.
NOW WATCH: Briefing videos
Business Insider Emails & Alerts
Site highlights each day to your inbox.