U.S. carrier Alaska Airlines grounded all of its flights after experiencing an IT outage on Sunday that impacted its systems, the company said, without specifying the nature of the outage.

Alaska Airlines has grounded all its flights due to an undisclosed technical error impacting its entire system

Alaska Airlines said its operations have resumed after a temporary ground stop was issued on all its flights and those of a regional subsidiary Horizon Air due to an IT outage affecting its operations,