Christopher J. Mackey Jr., 27, was killed in St. Petersburg, Florida, on May 1, 2015. He was survived by his father Christopher J. Mackey Sr., his mother Charwayne Pleas, two sons — Christopher J. III and Christian Mackey — and several siblings and extended family members who continue to mourn.

The St. Petersburg Police Department investigated the death but has not announced suspects or made any arrests. The case remains listed among the city’s unsolved homicides and family members have expressed the difficulty of living without answers. Few details about the circumstances of the killing have been released and there have been no publicly reported breakthroughs.

If anyone has information about Christopher’s death or remembers anything from the St. Petersburg area around May 1, 2015, please share what you know with the police.