The intersection of Rush and Oak streets in downtown Chicago. | Google

Police are investigating an armed carjacking that reportedly unfolded Monday afternoon just steps from the Magnificent Mile, on one of the city’s poshest retail corners.

A 40-year-old Albany Park man told police that he was driving on the corner of Rush and Oak streets when a masked man displayed a handgun with an extended magazine and demanded his vehicle around 2:40 p.m.

He surrendered his car and the offender sped away eastbound on Oak Street. Police surveillance cameras captured images of the 2019 Jeep Trail Hawk speeding across Michigan Avenue and then south on Inner Lake Shore Drive.

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The victim flagged down a passing police officer and at least one witness also called 911 to report the crime.

Monday’s carjacking took place at the foot of Oak Street, where high-end retailers Prada and Hermes anchor two corners.

Area Central detectives are investigating the case.