Government websites in four provinces and territories were shut down Thursday, with at least two jurisdictions blaming cyberattacks for their outages.

Websites for Yukon, Manitoba, Prince Edward Island and Nunavut were all inaccessible. P.E.I. and Yukon said cyberattacks were behind their shutdowns.

“At midnight on Sept.14, Yukon.ca experienced a cyberattack that shut down the website and other public-facing Yukon government websites,” said a statement from the territory.