On the night of March 31, 1991, in Roxbury, Boston, 24-year-old Nathaniel Rivers was fatally shot at an after-hours party in a crowded basement. Rivers, identified in reports as leader of the Intervale Street Posse, was struck in the back while trying to flee up a staircase after gunfire erupted that witnesses said came from two men seeking retaliation for a recent killing.

The shooting followed the March 23 killing of Todd Holliday. Believing the Intervale Street Posse responsible, Craig Holliday and Jeffrey Mooltrey went to the Fayston Street party where about eighty people had gathered. Witnesses reported hearing four to six shots and saw both Holliday and Mooltrey firing handguns. A young woman named Mia Sanders, who had no gang affiliation, was also killed in the crossfire and another man, James Whiteside, was shot outside.

After years of limited cooperation from witnesses, the case was later revisited by the Boston police cold case squad and charges were brought against Holliday and Mooltrey.