Guy Cason, 39, was fatally shot at his Columbus home on April 21, 2012. The shooting occurred about 4:21 p.m. in the 2000 block of Bairsford Drive on the city’s Far East Side. Investigators say a man knocked, asked for Cason by name, raised an old dispute and then shot him multiple times in the torso.

Cason collapsed just inside the house where he lived with his parents; the parents were present during the attack. Neighbors heard three gunshots and initially thought the noise was a car backfiring. Detectives were investigating whether Cason’s criminal history was connected to the killing, and no arrests had been announced immediately afterward.

If anyone saw someone calling at that house or noticed suspicious activity on Bairsford Drive around 4:20 p.m. that day, please come forward with what was seen.