Police have named a "prime suspect" 25 years after teenager Kristin Smart went missing from her California university campus in 1996. San Luis Obispo County Sheriff's Office announced that it served a search warrant at the home of Ruben Flores, the father of Ms Smart's former classmate Paul Flores. The Sherrif’s office called Mr Flores a "prime suspect" in the disappearance after previously considering him a longtime person-of-interest.