William David Carroll was 48 when he was killed at his Shreveport, Louisiana home on July 28, 2014. Two individuals reportedly entered his Holly Street residence in what authorities described as an apparent robbery attempt. Carroll and a male friend were inside when a struggle occurred and one of the intruders, armed with a handgun, fired a shot that struck Carroll in the chest. He was pronounced dead after police arrived.

Within days investigators identified two men as persons of interest and arrest warrants were issued. Kinoy Damon Singleton, 35, was charged with second-degree murder; 41-year-old Robert Lynn was charged as principal to second-degree murder. Both surrendered and were booked into the Caddo Correctional Center as the case proceeded.

Did anyone in the Shreveport area see activity near Holly Street on or around July 28, 2014 that could help the investigation?