As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
SFO - DURING OVERNIGHT CHECK, EVIDENCE OF PREVIOUS MINOR FIRE AT MID-RIGHT LAVATORY FROM PAPER TOWEL FOUND AROUND OVERHEAD LIGHT FIXTURE. REMOVED PAPER TOWEL AND CLEANED RESIDUE. NO ASSOCIATED DAMAGE FOUND AND SYSTEM GROUND CHECKED, NORMAL OPERATION. (X)