Security Guard Shoots Man Who Stabbed Woman at Washington's Union Station, Police Say Comes on the 14th anniversary of the Sept. 11 attacks.

 -- A shooting incident took place on Friday at Union Station in Washington D.C.

Law enforcement officials said a man stabbed a woman at the station, the main train hub in the nation's capital. A security guard then shot the suspect.

Both victims are being treated at area hospitals with non-life-threatening injuries. Washington, DC Police Commander Jeff Brown told reporters that it appears to be a domestic-related incident, and the two appear to have some kind of relationship.

Some visitors inside the station fled, while others sheltered in place, and the facility was secured without incident. Park Police says the station is open and Amtrak operations are running normally.

The incident comes on a day of heightened security as today marks the 14th anniversary of the Sept. 11 terror attacks.

ABC's Meghan Keneally and Sarah Shales contributed reporting.