On August 7, 1970, George Jackson's seventeen-year-old brother Jonathan held up a courtroom during the trial of prisoner James McClain, charged at the time with the attempted stabbing of a Soledad guard at the Marin County Civic Center. Jonathan Jackson, after having armed McClain, temporarily freed three San Quentin prisoners, and took Superior Court Judge Harold Haley, Deputy District Attorney Gary Thomas, and three women on the jury hostage to secure the freedom of the "Soledad Brothers". Jackson, McClain, Haley, and a prisoner named William Christmas were killed as they attempted to drive away from the courthouse. Haley died due to the discharge of a sawed-off shotgun that had been fastened to his neck with adhesive tape by the abductors. Thomas, prisoner Ruchell Magee, and one of the jurors were wounded. Two days after his brother's death, in George Jackson's last letter in his collection of letters written while in prison, he wrote a letter to his deceased brother, signing it: