Tampa, Florida -- Someone installed gas card skimmers at three stations in Tampa, and these devices were very hard to spot.
Authorities said the skimmers were found at three Shell / Circle K stores recently:
-- 4015 Westshore Blvd.
-- 6416 S. Dale Mabry Hwy.
-- 3650 S. Dale Mabry Hwy.
The skimmer installer was able to use a master key, unlock the pump cases and installed the devices onto the gas pumps hard drives.
A manager noticed the skimmers during a regular inspection, police said, but investigators are not sure if any drivers were at risk.