Six nurses at Sibley Hospital are being investigated by the D.C. Department of Health after dozens of drugs disappeared. The health department was notified by Sibley Hospital about missing drugs in June 2015. Two nurses had their licenses suspended by the agency in August. The four remaining nurses are being investigated to see whether or not controlled substances were unaccounted for either due to a documentation error or because they were improperly taken. According to the D.C. health department's licensing administration, one of the suspended nurses is accused of using the "override" command on the hospital drug distribution system 19 times to withdraw medications without a proper order. She allegedly had Dilaudid, lorazepam, and Percocet without valid prescriptions.