Four men are now being held in a Boone County Jail after a Rockford shooting investigation led to a search warrant in Belvidere. Search Warrant Executed in BelvidereAs the investigation progressed, detectives developed probable cause that led to a search warrant that was executed on Thursday, January 29, at a residence in Belvidere. Charges Authorized by Boone County ProsecutorsFollowing a review of the evidence, the Boone County State's Attorney's Office authorized multiple charges. All four were lodged in the Boone County Jail, and the Rockford Police noted that the investigation remains active and that additional charges or arrests may follow. Anonymous tips can be submitted by texting RPDTIP to 847411, using the Rockford PD app, or contacting Rockford Area Crime Stoppers at 815-963-7867.