A man was killed and a second injured after apparently trying to ram an entrance gate to the US National Security Agency outside Washington.
Video imagery showed a crash-damaged police vehicle and a civilian vehicle outside a main gate of the super-secure Fort Meade, Maryland headquarters of the NSA, the US intelligence agency that conducts electronic surveillance worldwide.
US television reports, citing a federal law enforcement official, said a police officer fired on the vehicle when it tried to ram the gates to the complex.
CNN reported that police in Anne Arundel, Maryland said one person was killed and another injured in the incident.
There was no immediate comment from the NSA or the Pentagon.
