Federal agents then fanned out to the Lake County Voter Registration and Election offices, where campaign finance records are kept, and the Lake County E-911 offices, which keeps records of police radio communications, to serve subpoenas for documents.

Buncich’s campaign finance reports indicate he received more than $9,000 in contributions in 2014 and 2015 from several towing and auto firms in Crown Point, Gary, Highland, Hobart, Merrillville, St. John and Whiting.

The elections board office and E-911 offices were allowed to remain open and continue operating.

Mark Back, a spokesman for the sheriff issued a statement 2:43 p.m. Thursday, which said: “The Lake County Sheriff’s Department is cooperating with our federal law enforcement partners and fully assisting the FBI with their inquiry. Regular Sheriff’s Department operations are continuing. We assure the citizens of Lake County that their safety remains our top priority. There was no interruption of police duties.”