State Police are trying to find another round of police impersonators — this time ones who robbed, tied up and gagged the victim.

It happened about 30 miles south of Springfield on I-55 near milepost 63 late Tuesday night. The victim told police a dark SUV with a red light on the dashboard and Illinois license plates pulled him over.

Three men got out of the car and took 55-hundred dollars in cash plus other items.