Smart went missing from California Polytechnic State University in May 1996 after returning from an off-campus party. ARROYO GRANDE, Calif. (AP) — A California sheriff said Friday that evidence suggests human remains were present at a home connected to the man convicted of killing Kristin Smart , a 19-year-old college student who went missing in 1996. San Luis Obispo County Sheriff Ian Parkinson said they cannot say whether the remains are those of Smart or whether authorities will seek another