he former glamour model - who was targeted by a gang 10 months ago - is concerned about her safety after the state-of-the-art device was discovered fitted to the base of her pink Range Rover during a routine vehicle service.
Katie told the Daily Star newspaper: "The garage had my car on a ramp during a routine MOT and spotted this tracker.
"The car was last serviced on August 16, so I know someone's been snooping around my property and shoved it on between then and now.
"Because I had a kidnap threat at the beginning of the year, we're wondering if it could be related. Basically, it means whoever planted it knew exactly where I was at all times and could then follow me, possibly with a view to kidnapping me. It's terrifying."