A ground stop for Delta flights at Detroit Metro Airport Friday morning has been lifted following a network outage affecting operations, according to airport officials.

Because of the technical issue, the carrier asked for a ground stop on its flights out of Detroit Friday morning. Detroit represents Delta's second-largest hub nationwide.

Officials told CBS Detroit that the ground stop was lifted as of about 9 a.m., though a ground delay was still affecting flights at the airport.

The Wayne County Airport Authority is offering concession vouchers to passengers affected by the ground stop. 

The ground stop did not affect flights from other airline carriers, airport officials confirmed, and the connectivity issue was isolated to the Detroit airport specifically.

"We apologize for the inconvenience to our customers who should monitor the status of their flight via the Fly Delta app and Delta.com," Delta representatives said in a statement.

Delta said it is offering a waiver for customers traveling to, from or through Detroit Metro Airport Dec. 5-6.