Girl, 17, charged with murder over California mosque massacre is unmasked — as her ties to shooters revealed

The 17-year-old girl charged over the deadly Islamic Center of San Diego massacre has been identified as North Carolina student Sarah Lindsey Santiago.

Santiago faces three counts of first-degree murder and one count of conspiracy to commit first-degree murder, according to WBAL-TV.

Sarah Lindsey Santiago, 17, appears in a police booking mugshot released by the Winston-Salem Police Department on Monday, August 31, 2026. via REUTERS

Prosecutors allege she agreed before the attack to livestream the massacre, distribute the recording publicly and release the gunmen’s manifesto.

Santiago was allegedly one of three people who watched the livestream and later recorded and disseminated the footage and attackers’ writings, authorities said.

People gather as police vehicles are parked outside of the Islamic Center of San Diego on Tuesday, May 19, 2026, in San Diego. The gathering took place the day after a shooting. AP Photo/Jae C. Hong