As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIRCRAFT WAS GROUNDED: AN EMERGENCY WAS DECLARED INBOUND INTO DEN DUE TO THE FLIGHT CREW REPORTING THAT THE LANDING GEAR INDICATION LIGHTS DON'T SHOW ANY GEAR INDICATIONS, THEY ARE BLANK BUT THE LOWER ECAM INDICATICATES DOWN AND LOCKED. THE AIRCRAFT LANDED SAFELY AT DEN AND TAXIED TO THE GATE UNDER ITS OWN POWER.