4 law enforcement officers were killed in shooting in Charlotte

Law enforcement agents are still processing the scene, the memo says, and will use that evidence to help in their search.

Four officers were killed in a shooting while attempting to serve a warrant at a home in Charlotte, North Carolina, including one deputy US marshal and two local task force officers, authorities say.

Four other law enforcement officers were shot during the incident, Charlotte-Mecklenburg Police Chief Johnny Jennings said Monday evening.

An internal law enforcement memo reviewed by CNN shows officers are looking for the person who bought the firearm used in the shooting to potentially bring federal charges.

Law enforcement agents are still processing the scene, the memo says, and will use that evidence to help in their search.

The compound tragedy adds to a growing list of officers shot and killed in the line of duty this year. At least 98 officers were shot in the line of duty from January through March, according to the Fraternal Order of Police, an organization representing US law enforcement officers. Ten of those officers died.

The shooting in Charlotte happened as members of a US Marshals fugitive task force were serving a warrant for possession of firearm by a convicted felon in the Shannon Park neighborhood, Jennings said.

The officers were met with gunfire from a “high-powered rifle” and returned fire, fatally shooting a suspect in the front yard of the house. Jennings said the task force had been serving the warrant to that suspect.