U.S. Marshals are assisting in the search for the alleged killer.

NEW YORK – A New York City man was arrested after he let a friend charged with shooting a Massachusetts state trooper stay at his place in the Bronx and then lied when U.S. marshals arrived, authorities said Monday. The encounter Friday resulted in a gunfight in which the fugitive, Andre K. Sterling, was killed and two deputy U.S. marshals were injured. The judge described the deputy marshals as “two of our own" because they protect the Manhattan courthouse and its occupants. Marshal Ralph Sozio called the deputy marshals' actions heroic. When the marshals entered, Sterling began shooting at them, leading to his death when the marshals returned fire, the complaint said.