The search for Mitrice Richardson

Volunteers make a poster as part of the search for Richardson, who was wearing jeans and a dark T-shirt when she left the sheriff’s substation about 1:25 a.m. She had no car, no cellphone and no purse.  (Jay L. Clendenin / Los Angeles Times)

A member of the search and rescue team retrieves a pair of jeans from brush on the canyon side of the guard rail along Malibu Canyon Road. It was not known if the pants belong to Richardson.  (Jay L. Clendenin / Los Angeles Times)

Cherise Rogers, 27, of Hawthorne, standing on Pacific Coast Highway at Webb Way in Malibu, was among the volunteers helping get the word out Saturday about the search for Richardson, who lives with her grandmother in South Los Angeles.  (Jay L. Clendenin / Los Angeles Times)

Richardson’s mother, Latice Sutton, says her daughter is a Cal State Fullerton graduate who had passed a test to become a substitute teacher and works as an executive assistant for a freight company. “She worked, she found time to volunteer, she’s highly responsible,” Sutton says.  (Jay L. Clendenin / Los Angeles Times)

Kathleen Mazzola of Malibu, with her back to the camera, stops to show her support with a hug for Richardson’s mother in a parking lot along Pacific Coast Highway in Malibu.  (Jay L. Clendenin / Los Angeles Times)

Richardson’s cousin Jonathan Sutton, 22, hands out missing person fliers at Pacific Coast Highway and Webb Way in Malibu. With the exception of a couple of probable sightings early on the day she disappeared, Richardson has not been heard from since, her family says.  (Jay L. Clendenin / Los Angeles Times)

A poster of Richardson at Pacific Coast Highway and Webb Way in Malibu.  (Jay L. Clendenin / Los Angeles Times)