On March 10, 2014, John Mack, 29, was found with a fatal gunshot wound to his mid-torso inside his Grafton Street residence in Rochester. Officers conducting a welfare check after a 911 call discovered him unresponsive on the ground floor; he was taken to Strong Memorial Hospital and pronounced dead shortly after arrival.

Investigators quickly identified a resident of the same Grafton Street address, 27-year-old Howard White, as the primary suspect. White was taken into custody and charged with second-degree murder. He was arraigned and entered a plea of not guilty; prosecutors say they have evidence they contend links him to the shooting. The specific circumstances that led to the fatal act remain under investigation.

If anyone knew John Mack, lived at or near that address, or has information about what happened that night, please share what is known.