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A federal judge sentenced an Illinois man to 55 years in prison Monday for the shooting death of a deputy U.S. marshal serving an arrest warrant for a series of downstate burglaries.

U.S. District Judge Matthew F. Kennelly imposed the sentence on Floyd E. Brown, 43, of Springfield, for his April 8 conviction on charges of second-degree murder of a federal officer, attempting to kill additional federal officers, assault of federal officers and multiple firearm counts. Brown was acquitted of first-degree murder.

Special Deputy U.S. Marshal Jacob Keltner, 35, was a McHenry County deputy working with a Marshal’s Service fugitive task force when he was killed on March 7, 2019, at a Rockford hotel.

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Illinois news, Peoria news

An Illinois man was sentenced to 55 years in prison for killing a deputy U.S. marshal.

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When task force officers attempted to gain access to Brown’s third-floor hotel room, he fired 10 shots through the door and nearby walls, narrowly missing three deputy marshals, U.S. Attorney John Lausch said. Brown then jumped out of a window and fired a shot that killed Keltner, who was positioned outside.

Brown was arrested several hours later near Lincoln, Illinois, after a high-speed pursuit.

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"Through the violent actions of Floyd Brown, the Keltner family lost a devoted son, husband and father, and the citizens of the Northern District of Illinois lost a dedicated public servant," Lausch said in a news release. "Special Deputy Keltner made the ultimate sacrifice in the service of our nation. His bravery and dedication will not be forgotten."