Walnut Creek resident Jaycee Behnke and Concord resident Antonina Abdulwajid are charged with second-degree robbery and assault by means likely to produce great bodily injury, the Contra Costa County District Attorney’s Office announced Wednesday.

Two 18-year-old women have been charged by the Contra Costa County District Attorney's Office with allegedly assaulting and robbing a man in Walnut Creek, prosecutors said.

Four teens have been charged in the assault and robbery of an elderly Walnut Creek man last week. Two 18-year-old women, identified as Jaycee Whitney Chamberlain Behnke of Walnut Creek and Antonina “Hunter” Abdulwajid of Concord were charged,