State and federal officials are pushing back against violent and destructive protests by announcing the arrest of a man they believe committed arson inside Seattle’s temporary autonomous zone known as the Capital Hill Organized Protest.

Isaiah Thomas Willoughby could face up to 20 years in prison after his “distinctive clothing” helped identify him as the person who set fire to the abandoned Seattle Police East Precinct inside the CHOP area, U.S. Attorney Brian T. Moran said Wednesday.