Hadari Darden was last seen on April 5 at the Skyline Shopping Center in Daly City. He was questioned by police for walking around the parking lot around 1 a.m., but was never detained and was not acting strange. He is a resident of Berkeley and was last seen there around Curtis and Gilman streets before heading to Daly City. He has not shown up for his job as a Kaiser radiologist. Family members say he exhibited strange behavior in the weeks before he disappeared. He was wearing a dark-colored hooded top, green pants, black athletic shoes, and carrying a green backpack.