PEORIA – There is a heavy police presence outside the Caterpillar Inc. headquarters in Peoria, Illinois, local media is reporting.

According to WEEK.com, law enforcement are searching the building looking for tax documents. The company’s human resources department is telling employees that law enforcement are executing a search warrant.

Viewer photos from the scene show investigators wearing IRS jackets entering the company’s headquarters.

Read the full report on WEEK.com