FBI agent fatally shot person in altercation inside Washington, D.C., rail station

An off-duty FBI agent fatally shot a person with whom he got into a fight Wednesday evening inside a Washington, D.C., rail station, according to police.

The incident occurred at about 6:30 p.m. inside the Metro Center rail station, Ashan Benedict, a Metropolitan Police Department assistant police chief, said a press conference about two hours later.

He also said the altercation started on the station platform and that the agent "appears" to have been the victim. He also said the shots were fired after the agent and the victim tumbled over a wall and fell about eight feet.

However, Benedict made clear the investigation is "preliminary and subject to change." 

He said the yet-to-be identified agent is a veteran special agent assigned to FBI headquarters, in the nation's capital. The agent was taken to a hospital for treatment of minor injuries.

On Thursday afternoon, police identified the deceased shooting victim as 28-year-old Troy Bullock. They also said he was armed but that they remained uncertain whether the FBI agent knew that. 

The Metropolitan Police Department is leading the investigation with the FBI’s cooperation.

"The FBI takes any shooting incident involving our agents or task force members seriously," the FBI Washington Field Office said in a statement obtained by nbcwashington.com