Three people have been shot and wounded near the US National Security Agency’s headquarters in Maryland, local media said.
One person is in custody, according to reports.
The NSA is yet to release information and the FBI’s Baltimore office said it had sent agents to the scene.
Local authorities tweeted earlier that they were responding to a possible shooting incident outside the agency’s campus in Fort Meade.
It also said the motorway near Fort Meade was closed in both directions due to the police investigation and advised drivers to take alternative routes.
A video broadcast on CBS News showed a black sports utility vehicle parked near the entrance of the NSA with what appeared to be bullet holes in the front windshield.
The vehicle was pictured at the end of a lane closed off by concrete NSA-stamped barricade blocks on one side and a metal fence on the other.
US President Donald Trump has been briefed on the shooting, a White House spokeswoman said.
In March 2015, two people tried to drive their sports utility vehicle through the NSA’s gate. Officers shot at the vehicle when they refused to stop, killing one of the occupants.
The people in the vehicle in 2015 may have taken a wrong turn after partying and taking drugs, according to news reports.__EuroNews