Overview

• The assault and robbery took place around 11 p.m. on Aug. 7 at the 1900 block of Tice Valley Boulevard near Rossmoor Shopping Center, leaving the victim with significant injuries and stolen belongings.
• Two adult suspects, 18-year-olds Antonina Abdulwajid and Jaycee Behnke of Concord, and two minors, a 17-year-old and a 15-year-old from Walnut Creek, were all arrested later that night.
• Each suspect faces four felony charges—robbery, assault with a deadly weapon not involving a firearm, causing injury to an elder, and conspiracy to commit a crime—with the adults booked into Martinez Detention Facility and the minors into juvenile hall.
• Officials have declared the investigation ongoing and assured the community that there is no current threat to public safety.
• The case underscores growing regional efforts to use technology and public cooperation to swiftly address and deter violent crimes against vulnerable seniors.