OAKLAND -- A dispute over a $10 bag of marijuana left a 14-year-old blinded in one eye and a 21-year-old mother dead, testimony in a murder hearing revealed Thursday.

Demetria Spears, 21, lost her life at an East Oakland apartment complex last year because neighbors of her cousin accused Spears of selling them a fake "dime bag" of marijuana, Spears's cousin, Diahletris Simpson said.

Spears was shot by Larry Alford, 22, after a fist fight broke out between Alford, Spears, Simpson and two other men, testimony during a preliminary hearing revealed. Alford is also accused of shooting Spear's 14-year-old cousin in the head.

The shooting occurred, witnesses said, while Simpson and six others were moving clothes and shoes from Simpson's apartment at 1923 85th Avenue in East Oakland. Simpson was moving, she said, because she no longer wanted to live next door to Alford and his girlfriend, Donisha Rene Allen, 22.

Simpson said tensions between her family and the couple had peaked in the days before the shooting after Allen accused Spears of selling her "fake weed." A couple of days before the shooting, Simpson said, a fist fight had broken out between Spears and Allen.

When Simpson returned to her apartment on Aug. 25, 2012, she said she was about 20 minutes into moving clothes when Allen and Spears began exchanging words. While Alford smoked a cigarette on the narrow walkway between the apartments, Simpson said, the argument between Allen and Spears intensified.

At one point, Simpson said, Spears became angry and threw Alford's small BBQ grill off the second floor walkway. Alford responded by grabbing Spears by the arms and pushing her against a railing, witnesses said.

At that point, four people began to fight Alford until he fell to the ground. As the group began to retreat into Simpson's apartment, Simpson said, Alford rushed into his apartment, grabbed a rifle, stood in the doorway and fired three shots.

Alford fired the shots, three witnesses said, as Allen yelled at him to "light it off, light it off."

Alford is charged with murder and attempted murder along with a handful of felony crime enhancements that could send him to to prison for life. Allen is also accused of murder and attempted murder for allegedly aiding and abetting Alford.

Alameda County Superior Court Judge Gloria Rhynes ruled Thursday that Deputy District Attorney Matthew Wendt presented enough evidence against the couple to place them before a jury.