ROCKFORD, Ill. (AP) — A federal grand jury has returned several new charges against an Illinois man accused of fatally shooting a sheriff’s deputy who was part of a federal fugitive task force that was trying to arrest him at a hotel on burglary and parole violation charges.

A superseding indictment returned Tuesday adds several weapons-related counts against Floyd E. Brown, of Springfield, including one count of using a deadly and dangerous weapon to forcibly assault 35-year-old McHenry County Sheriff’s Deputy Jacob Keltner and a count of attempting to kill a deputy U.S. marshal and two special deputy marshals.

Brown, 41, has pleaded not guilty to first-degree murder and other weapons charges in the March 7, 2019, shooting of Keltner while the task force tried to serve Brown with an arrest warrant for outstanding charges.

Brown fled the hotel in Rockford, about 80 miles (129 kilometers) northwest of Chicago, before eventually crashing along an interstate in central Illinois. An hours-long standoff ensued that ended with Brown’s arrest. He could face the death penalty if convicted of the most serious charges.