On January 18, 1973, a brutal attack at 7700 16th Street NW in Washington, D.C. left several people dead and others wounded. The house, owned by basketball player Kareem Abdul-Jabbar for a group of Hanafi Muslims, was targeted in what investigators linked to a feud between the Hanafi group and the Nation of Islam after Hanafi leader Hamaas Abdul Khaalis sent critical letters to Nation of Islam ministers.

Among those killed was 23-year-old Abdu Nur, who was shot to death in a bedroom. Another man and a young boy were also shot and killed, and four young children, including one nine days old, were drowned. Two people survived with severe wounds. Men tied to the Black Mafia and affiliated with the Nation of Islam were later indicted in connection with the massacre; trials produced some convictions but also acquittals, a retrial, and a mistrial amid witness problems.

What information could help clarify who was present at the house that day or explain why Abdu Nur was targeted?