STOCKHOLM — Swedish officials say “a communication problem” is affecting air traffic in northern and central Sweden, meaning planes cannot take off from three major airports, including two in the Swedish capital Stockholm.

A spokeswoman for Sweden’s Civil Aviation Administration Ase Hermann says no flights have been taking off from Stockholm’s Arlanda and Bromma airports and Landvetter airport in Sweden’s second largest city, Goteborg since 12 p.m. (1000 GMT).

She said it was “a technical issue with a radar system that we are working on.” It was not clear when the problem that was causing delays but no cancellations, would be fixed.