North Carolina teen named as accomplice in San Diego mosque massacre; mugshot released

A 17-year-old North Carolina student, Sarah Lindsey Santiago, has been identified as an accomplice in the deadly May 18 attack on the Islamic Center of San Diego. She has been indicted on three counts of first-degree murder and one count of conspiracy after prosecutors say she watched the livestream of the shooting, recorded the gunmen’s writings, and disseminated the material and manifesto; investigators indicate she also planned to livestream the massacre. The attack left three people dead; the two gunmen, Cain Clark and Caleb Vazquez, died at the scene. The case highlights the role of online dissemination in mass violence and the possibility of prosecuting accomplices even if they did not pull the trigger.