As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
SLC - DIVERSION - FLT 0587 - EN ROUTE FROM PHX TO GEG FLIGHT ATTENDANTS NOTICED A STRONG SULFUR ODOR IN THE CABIN THAT SEEMED TO COME AND GO, DIVERTED TO SLC. MAINTENANCE RAN AIR CONDITIONING PACKS, PRESSURIZED THE AIRCRAFT AND INSPECTED THE INTERIOR LIGHTING SYSTEM, NO SMELLS WERE NOTED.