Judge sentences Robert W. Koehler, IV to serve 56 years to life in prison for the murder of Kristen Marti

Booking Photo (05/31/2018): Robert William Koehler, IV (DOB 03/03/1982) Judge sentences Robert W. Koehler, IV to serve 56 years to life in prison f...

February 1, 2023
6:22 PM

Booking Photo (05/31/2018): Robert William Koehler, IV (DOB 03/03/1982) Judge sentences Robert W. Koehler, IV to serve 56 years to life in prison for the murder of Kristen Marti Author: District Attorney Date: 1/31/2023 5:46:31 PM Grover Beach resident Robert W. Koehler, IV (40) was sentenced to 56 years to life in prison today for the January 2018 brutal murder of 26-year-old Kristen Marti, who remained missing for over two months. District Attorney Dan Dow announced today that Robert William Koehler, IV (DOB 03/03/1982) was sentenced to 56 years to life in prison for the murder of 26-year-old Kristen Marti.