One day after DIA's general counsel filed a federal lawsuit against the city and three of Mayor Mike Johnston's appointees -- alleging unethical and potentially illegal behavior, and claiming they were plotting to oust airport CEO Phil Washington -- one of the appointees,

The Federal Aviation Admission has issued a ground stop order at Denver International Airport, with airport officials also announcing a power outage affecting trains and other operations at DIA. Over 250 flights have been delayed and six have been canceled so far at DIA today,

By the time the last plane took off on Sunday, 973 flights headed in and out of Denver International Airport had been delayed and 145 had been canceled, according to flight tracking data.