Michael Howell was 46 when he was fatally shot inside his apartment at the Bristol Park complex in Tulsa, Oklahoma. On the evening of June 8, 2014, neighbors reported gunfire and officers found Howell in apartment 3003 with a fatal gunshot wound. Investigators say a bullet was also fired into Howell’s apartment door shortly after 11 p.m.

Witnesses described Howell earlier that night talking with an unidentified African American man. After the shooting, four masked people were seen fleeing the building and getting into a gold or silver SUV that drove away. Authorities believe the killing grew out of a dispute, but say the identities of those involved remain unknown and no arrests have been announced.

The investigation has stalled and the case is cold. If anyone remembers seeing activity at Bristol Park on the night of June 8, 2014, or can identify the man seen with Howell or the vehicle that fled, please come forward with information.