CHICAGO (CBS)– A 24-year-old man was fatally shot in the 500 block of Lower Wacker Drive early Sunday morning.

According to Chicago police, an unknown dark-colored SUV drove up to the 24-year-old driver’s vehicle and fired shots, striking the man in the chest just after 3 a.m.

The victim was transported to Northwestern Hospital where he was pronounced dead.

Police said the offender fled westbound on Lower Wacker Drive.

No one is in custody. The victim was known to police.