The Chicago Police Department is investigating an incident in which a white officer tells a man shooting a video that Michael Brown "deserved" to be shot last year in Ferguson, Missouri.

On Wednesday, department spokesman Anthony Guglielmi said Superintendent Garry McCarthy ordered the probe last week after seeing the video. Guglielmi wouldn't identify the officer and said it was unclear when the incident took place.

In the video, during an apparent argument, the unidentified man shooting the video mentions Brown's name and says he worries police might "shoot us." The plainclothes officer says Brown "got what he had coming." The race of the man shooting the video is unclear.

Brown, an unarmed, black 18-year-old, was fatally shot by a white officer. A grand jury decided not to indict the officer.