One man killed and another injured after ramming incident at US National Security Agency outside Washington

The shot-up vehicle at the scene
The shot-up vehicle at the scene

A man was killed and another injured after they apparently trying to ram an entrance gate to the US National Security Agency outside Washington.

Shots were fired and one person was killed as a vehicle tried to bypass a secured entrance to the NSA complex at 9am local time.

Fox News has reported that there were two occupants of the vehicle and that both were men dressed as women. Aerial video shows a woman's wig on the ground outside of a black SUV at the scene.

Two people - a 20-year old male and a 44-year-old male - were injured and flown to Shock Trauma in Baltimore.

The incident happened at the NSA building off of Route 32 in Anne Arundel County.

The FBI issued a statement on the shooting: 

"FBI Baltimore is investigating a shooting incident which occurred this morning at a gate at the National Security Agency at Fort Meade just off I-295 in Anne Arundel County, MD.

“The shooting scene is contained and we do not believe it is related to terrorism. We are investigating with NSA Police and other law enforcement agencies. Our Evidence Response Team is processing the crime scene, and FBI Agents are doing joint interviews with witnesses. We are working with the US Attorney's Office in Maryland to determine if federal charges are warranted. We have no further information at this time to release."

A building on the NSA campus was damaged by gunfire earlier this month. 

Authorities captured a man March 3 who they believe fired that night on the NSA site, as well as earlier at several nearby places and two moving vehicles.

The suspect in that case, Hong Young, told police he heard voices directing him to fire on one of the occupied vehicles. 

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.