A power outage at Atlanta’s Hartsfield-Jackson International Airport left passengers stranded on Sunday, December 17.

The airport, deemed the world’s busiest according to Airports Council International, was plunged into darkness due to a possible electrical issue at a Georgia substation, airport officials told NBC. At least 100 jets were parked on taxiways at one point, Atlanta-based WXIA-TV reported.

The Federal Aviation Administration issued a ground stop for flights to Atlanta and inbound flights were diverted to other airports.

Airport officials were working with Georgia Power to investigate the cause of the outage.

This video, taken by a man bound for New York, shows the scene at the airport on Sunday. Credit: Instagram/ledmob_real via Storyful