Overview

• The assault occurred at about 11 p.m. on Aug. 7 on the 1900 block of Tice Valley Boulevard near Rossmoor Shopping Center.
• Officers discovered the elderly victim with significant injuries and missing personal items before pursuing the suspects’ getaway car.
• Walnut Creek police leveraged witness tips with technology to identify and locate the vehicle within hours of the attack.
• Adult suspects Antonina Abdulwajid and Jaycee Behnke, both 18 from Concord, and two Walnut Creek minors aged 17 and 15 are in custody.
• They face four felony counts—robbery, assault with a deadly weapon, causing injury to an elder and conspiracy—and police say there is no ongoing public safety threat as investigations continue.