Tucson, Ariz. – A deputy U.S. marshal serving a felony arrest warrant has been shot and killed outside a Tucson house.

Tucson Police Chief Chris Magnus says the incident happened about 5:30 p.m. Thursday on the city’s north side.

The man suspected of shooting the marshal was arrested after a standoff at the house.

Magnus said the Marshals Service was serving a warrant against 26-year-old Ryan Schlesinger when the suspect fired at them. Marshal Service personnel returned fire, but the suspect was not wounded.

The Marshals Service says the federal agent was the first deputy U.S. marshal to be killed in the line of duty in Tucson in 66 years.

Authorities did not immediately identify the agent.

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