As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIRCRAFT WAS GROUNDED: AT APPROXIMATELY 130 KNOTS TAKEOFF WAS ABORTED AFTER UNKNOWN " BANG" NOISE WAS HEARD. MAINTENANCE MADE A THOROUGH INSPECTION OF AIRCRAFT & ENGINES & LANDING GEAR. AFTER DEBRIEFING THE FLIGHT CREW DETERMINED THE UNKNOWN BANG WAS FROM UNSECURED FIRE EXTINGUISHER AIRCRAFT WAS OK FOR SERVICE.