An investigation is underway after a man was found shot to death early Thursday morning inside a residence in the Burnshine neighborhood.Chicago police said shortly after 2 a.m., officers responded to the 9200 block of South Dobson Avenue, where a witness told them she found the victim, a 69-year-old man, who is also a family member, unresponsive with a gunshot wound to the head. Fire crews arrived on the scene to treat the man. He was taken to the University of Chicago Medical Center, where he was pronounced dead. Police said they're speaking with a person of interest and believe the incident is possibly domestic-related. Area 2 detectives are investigating.