United Airlines has announced that all flights, nationwide, will be delayed from departure due to what the airline is citing as a “technology issue.”

The New York Times reports that United had full stops at its hub locations in Newark, New Jersey; Chicago; Denver; Houston and San Francisco, citing the Federal Aviation Administration (FAA). The FAA's website also notes that the ground stop was still live in Denver and Newark at 10:28 p.m. ET and will be in effect until 11 p.m.