Chattanooga Police, TBI and DEA investigators work a scene at medical office at 340 Holtzclaw Ave. today.

Federal investigators and local law enforcement are executing a search warrant this morning at a medical office at 340 Holtzclaw Ave. as part of an ongoing investigation into pill mills.

DEA agents told the Times Free Press that the agency has been looking into pill mill operations in this area for some time.

On Tuesday, agents also searched the Primary Care and Pain Clinic on Airpark Drive.

Read more in tomorrow's Times Free Press.