Christopher Tyler was 31 when he collapsed on April 3, 2015, in Tulsa. What first looked like a sudden heart attack was re-evaluated after investigators reconstructed events from the hours beforehand and the medical examiner concluded that physical stress and trauma from a domestic altercation with his brother precipitated the cardiac event. Tyler was taken to a Tulsa hospital and survived for several days before dying there; the medical examiner’s findings led officials to reclassify the death as a homicide and list it as Tulsa’s 36th homicide of 2015.

The death thus stands recorded as a homicide with no publicly documented resolution. If anyone knew Christopher, the circumstances of that family altercation, or has information that could clarify what happened, please share what is known.