A man fatally shot another man during what appeared to be an attempted carjacking in Chicago's Loop early Friday, according to police.
Authorities said the incident took place at around 3:15 a.m. in the first block of Ida B. Wells Drive.
A 41-year-old man driving a BMW told investigators that a 22-year-old man driving a Volkswagen rear-ended his vehicle, officials said.
The BMW driver told police that he left his car to see the damage and when he went back to retrieve his cell phone, the other driver approached him with a handgun and demanded his keys, pushing him into the car.
Both men were in the vehicle when the BMW driver, who has a concealed-carry license, told police he got his own handgun from inside the car and shot the other man in the head.
The 22-year-old man was taken to Stroger Hospital where he was pronounced dead, according to Chicago police.
The Cook County medical examiner's office could not immediately confirm the fatality and further details, including his identity, were not available.
The BMW driver was taken into custody for questioning, according to police. It was not immediately clear if any charges would be filed in the case, and the investigation into the incident remained ongoing.