Deputy US Marshal shot and killed while serving an arrest warrant in Louisiana

The suspect is in custody, according to the U.S. Marshals Service. 

A Deputy U.S. Marshal was shot and killed on Monday while serving an arrest warrant in Alexandria, Louisiana, according to a statement from the U.S. Marshals Service.

The Rapides Parish Sheriff's Office said in a statement that the incident occurred around 3 p.m. when "Sheriff’s Detectives, along with members of the U.S. Marshals Violent Offender Task Force, were conducting a law enforcement operation in the Rutland Road area to arrest a wanted fugitive where an Officer Involved Shooting occurred. "

The suspect is in custody, according to the U.S. Marshals Service.

The FBI is leading an investigation into the murder of the deputy, and the Rapides Parish Sheriff's Office is handling the investigation into the shooting, according to the USMS.

"The FBI responded to an incident this afternoon in Alexandria with the Alexandria Police Department, Rapides Parish Sheriff's Office, and Louisiana State Police," according to a statement from the FBI New Orleans Field Office.

"Because this is a very active and ongoing investigation, we cannot comment further at this time," according to the FBI.

Tom Chittum, the former associate deputy director of the Bureau of Alcohol, Tobacco, Firearms & Explosives, told ABC News that fugitive operations are dangerous for law enforcement.

"Fugitive operations are some of the most dangerous situations that law enforcement officers face because they are often pursuing people who know they are wanted, are on alert, and have already decided they are not going to be taken into custody without a fight," Chittum said. "It is truly dangerous work."