GANDER, N.L. — The Canada Border Services Agency has apologized to the more than 250 passengers aboard a diverted United Airlines flight who were forced to spend 12 hours inside an airport in central Newfoundland after CBSA officers failed to process them.

The federal agency issued a statement saying Flight 915 was en route from the Washington, D.C., area to Paris when it was diverted to Gander International Airport at 1 a.m. local time because of a mechanical issue.