Authorities said two people were being questioned Thursday afternoon in connection with a shooting and a robbery outside a Chicago Transit Authority garage on the city's north side.
Shortly before 9 a.m., a retired transit worker was walking to a credit union inside the garage, in the 600 block of North Pulaski Road, authorities said.
The man planned on depositing a "large sum" of money, a police source said, and was approached by two people who robbed him.
The victim was shot in the thigh during a robbery, according to police News Affairs Officer Jose Estrada and was taken to Mount Sinai Hospital in critical condition.
Police later found a vehicle matching the description of the van seen driving away from the scene at a gas station at Washington and Pulaski.
Two men were taken into custody and were being questioned by detectives, police said, adding that charges had not been filed as of late Thursday afternoon.
CTA spokeswoman Catherine Hosinski said the transit agency is cooperating with police.
Area North detectives are investigating.