Jury selection for a 2018 murder case got underway in San Luis Obispo yesterday. 40-year-old Robert Koehler was a person of interest when Kristen Marti went missing in January 2018. He was later arrested after the victim’s body was eventually found in a creek in Perfumo Canyon in March 2018. Koehler’s defense attorney claims there is no evidence that he was with Marti in the area where her body was found.