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.

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.

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,