As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING FLIGHT 5813A, GEAR DISAGREE WARNING MESSAGE APPEARED IN FLIGHT. AIRCRAFT PERFORMED UNSCHEDULED LANDING AT CKB. PERFORMED A FUNCTIONAL TEST OF THE EXTENSION AND RETRACTION SYSTEM OF THE LANDING GEAR IAW CRJ200 AMM 32-30-000-720-801. COULD NOT DUPLICATE. FUNCTIONAL TEST CHECK GOOD.