CHICAGO (CBS) — Police are searching for three men who have been going up to people and robbing them at gunpoint at Bank of America ATMs on the city’s South Side.

Area South detectives say the robberies have been happening in the Grand Crossing, South Chicago and Gresham Districts – a large region that stretches from Jackson Park to the Indiana State Line.

In each incident, one the robbers walks up to someone near the ATM, pulls out a gun, and orders the victims at gunpoint to deposit a check into their accounts. Afterward, the robber forces the victims to withdraw money from their accounts, and drive off in a white, black or dark green getaway car.

The accomplices remain in the car during the robberies.

The gunpoint robber is described as an African-American male between the ages of 20 and 29, standing 5 feet 5 to 6 feet inches tall, with a medium to dark complexion. He was seen wearing a red baseball cap with the word “SOCIETY” or something similar on it; a maroon and gray jacket with the number 24 on the left shoulder and an S on the left side; dark pants; and red, white and black gym shoes.

The gun he displays in a blue steel revolver, police say.

The two suspected getaway cars in a series of incidents where people were robbed at gunpoint at ATMs. (Credit: Chicago Police)

The robbers flee in a dark green four-door Cadillac or a white four-door vehicle.

Police advise neighbors to be alert when using an ATM, and to alert others to the incidents. If the robbers strike you, do as they say and allow them to leave without confrontation, and call 911 afterward, police advise.

Anyone with information is asked to call Area South Detectives, at (312) 747-8273.