2 Arrested in Sleepover Shooting Cops say Darnell Williams, 22, has since killed another person By Ruth Brown, Newser Staff Posted Oct 2, 2013 12:41 PM CDT 16 comments Comments Darnell Williams. (Alameda County Sheriff's Office) (Newser) – Two men have been arrested in the fatal shooting of an 8-year-old girl in Oakland in July. Darnell Williams, 22, is accused of the murder, and Joseph Carroll, 27, allegedly cased the apartment before the incident and helped plan the attack. According to cops, Williams showed up at the apartment where Alaysha Carradine was visiting for a sleepover with a friend, intent on killing a rival and his family. When Alaysha opened the door to the apartment, he began to spray bullets inside, killing the 8-year-old, and injuring her 7-year-old friend, a 4-year-old boy, and their 63-year-old grandmother. His intended target either wasn't hit or wasn't there, the San Francisco Chronicle reports. Authorities say the attack was revenge for the killing of Caroll's cousin, Jermaine Davis, 26, that same evening. Authorities say Williams had been in prison for weapons violations, and also shot and killed a friend last month during an attempted robbery.—a shooting which also caused his own 7-year-old nephew to be grazed in the face by bullet fragments. With multiple murder charges, Williams faces the death penalty or life in prison without parole. Carroll is charged with murder and attempted murder. "I'm pissed, but I'm excited," says Alaysha's mother, after waiting months for an arrest. "I want complete justice for my daughter."