AP NEWS

Police: No evidence of shooting at Navy site in Washington

July 2, 2015 GMT
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A U.S. Park Police helicopter hovers overhead at the Washington Navy Yard campus in Washington, Thursday, July 2, 2015. A lockdown was underway Thursday morning across the Washington Navy Yard campus after reports of shots fired, but a senior law enforcement official said those reports had not been confirmed. (AP Photo/Andrew Harnik)
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A U.S. Park Police helicopter hovers overhead at the Washington Navy Yard campus in Washington, Thursday, July 2, 2015. A lockdown was underway Thursday morning across the Washington Navy Yard campus after reports of shots fired, but a senior law enforcement official said those reports had not been confirmed. (AP Photo/Andrew Harnik)

WASHINGTON (AP) — Investigators found no evidence of a shooting after a key Navy site in the U.S. capital went on lockdown Thursday because someone reported shots fired in the same building where a gunman killed 12 workers in a rampage two years ago.

Police said a woman called from inside a Washington Navy Yard building, located less than 2 miles (3 kilometers) from the Capitol, to report that she might have heard sounds of gunshots early in the morning. However, investigators found no sign of a shooting, a shooter or anyone injured. No arrests have been made and no weapons were found, officials said.

“There is no evidence of any victims today,” District of Columbia Mayor Muriel Bowser said.

Navy security saw surveillance video of two people jumping the fence in the vicinity of the building a couple of minutes before the report of gunfire, according to officials. Security found no one inside the building.

Officials do not believe the report was a hoax, D.C. police Chief Cathy Lanier told reporters. Investigators interviewed the woman who made the call, Lanier said, and she did exactly as authorities regularly tell people: Report anything you think may be suspicious.

The alert triggered a large response in keeping with protocols established after the 2013 massacre. Law enforcement agents and fire fighters rushed to the scene and a helicopter hovered overhead.

In September 2013, a military contractor killed 12 civilian workers at the Navy Yard’s Building 197 before he was fatally shot by police.

The Washington Navy Yard is an administrative center for the U.S. Navy and the oldest naval installation in the country.

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Associated Press writers Brad Foss, Ted Bridis, and Jessica Gresko contributed to this report.