From the Associated Press:

State and federal agents on Wednesday raided a central Pennsylvania company that cleans up spills, hauls fracking waste and provides other environmental services.

The raid took place at Minuteman Environmental Services in Milton.

The FBI and Pennsylvania Department of Environmental Protection confirmed to The Associated Press they were among the agencies taking part. Agents from the state Attorney General's Office and the IRS also participated, loading boxes of evidence into an unmarked white truck, The Daily Item of Sunbury reported.

Officials declined comment on why they were there.

Gov. Tom Corbett visited the company more than a year ago as part of an effort to drum up support for his state budget proposal. He called Minuteman "an American success story." The Central Pennsylvania Chamber of Commerce recently named Minuteman its "Business of the Year."

A man who answered the phone at Minuteman declined comment on the investigation.