Police disclose new details on missing Richmond teen By Keith Burbank The boy was last seen on the Richmond bridge. RICHMOND, Calif. - Police in Richmond on Friday released new details about a teen missing for more than a week and are asking the public for any information they may have. Antoine Whittley, 17, was last seen at about 8:30 p.m. Feb. 10 on the upper deck of the Richmond-San Rafael Bridge after allegedly taking illegal drugs including hallucinogens with a friend and attacking a rideshare driver, police said. 17-year-old Antoine Whittley, seen here in this Oct. 2018 photo, which was provided by Richmond police.