Police are investigating after a man was shot on the South Side on Monday night. Officers responded just before 10 p.m. to the reported shooting at Tabor Avenue and West Southcross Boulevard. They found the victim, described as a man in his 30s, shot several times in the driver's seat of a truck. His passenger wasn't injured. Paramedics took the victim to Brooke Army Medical Center in critical condition. His name hasn't been released. Officers are looking for the suspect. No motive is yet known.