Delta Air Lines passengers who sent tweets to Delta’s account Sunday night received a message that technical issues with the IT system were causing delays.

The outage was first reported around 7:15 p.m. when the airline tweeted to customers about the issue.

“We’re experiencing technical issues impacting the operation. Our technical teams are working to resolve this as quickly as possible to minimize the impact to our customers. We apologize for any inconvenience our customers may experience.”

A captain told Channel 2 Action News the outage might last until 8:30 p.m. and could be extensive and just before 9 p.m. said delays would take at least another hour.

A Delta passenger sits on the floor while waiting in line at Hartsfield-Jackson International Airport after Delta Air Lines grounded all domestic flights due to automation issues, Sunday, Jan. 29, 2017, in Atlanta. (AP Photo/Branden Camp)

Credit: Branden Camp

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Credit: Branden Camp

Delta spokesman Morgan Durrant said teams are working expeditiously to fix a systems outage that is causing departure delays for flights on the ground.

“Flights in the air remain unaffected,” Durrant said.

Similar problems were reported last August, The Atlanta Journal-Constitution previously reported.

The airline apologized through its spokesman and asks those seeking updates to visit news.delta.com.