SEATTLE — Seattle Police are investigating after a man was found shot in a stairwell in the Mount Baker neighborhood. A 911 caller alerted police to the shooting in the 3600 block of 34th Avenue South at around 2 a.m. on Sunday. When police arrived, they found a 22-year-old man alive but seriously injured. Despite aid from officers and the Seattle Fire Department, the victim later died at Harborview Medical Center. According to Detective Brian Pritchard, there was an altercation that occurred before the shooting, but detectives couldn’t share more information about the circumstances as the homicide investigation is still...