Chicago (CBS) — Five people have been charged in the armed carjacking of an off-duty Chicago police officer.

Those charged are Raynell Lanford, Javion Bush, Jamar Jarvis and Jamaal Ashsaheed, all of Chicago. The fifth suspect is a juvenile.

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On Thursday, the suspects allegedly walked up to the off-duty officer in Edgewater, pulled out a gun and demanded the keys to her Lexus.

Police caught up with the stolen car and chased the suspects to the University of Chicago.

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Four of them face charges of aggravated vehicular hijacking with a firearm.