By Mike DarnayPITTSBURGH (KDKA) -- Pennsylvania State Police are investigating after a security guard was dragged by a truck while chasing after a suspect who allegedly stole a giant foam carrot from an Easter display at the Clearview Mall.  The mall's security guard who was on duty at the time of the theft told Troopers that he chased the suspects into a dark red Chevy pickup truck into the parking lot near the Texas Roadhouse. When the security guard tried to open the door of the truck, he was dragged approximately 1/4 mile at an approximate speed of 35 miles per hour