It happened just before nine o'clock Saturday night. " Witnesses including the father and the sister of the two brothers observed the 49 year-old brother as he stabbed his 45 year-old brother three times." , Police Sgt. Scott Brunow said. The younger brother was taken to Wesley Medical Center in serious condition. The older brother was arrested and booked for aggravated battery. Police blocked 10th and Terrace with yellow crime scene tape as they conducted their investigation. Neighborhood residents also inside the home were interviewed by police. No word on which game the argument was about.