Nova Scotia police under scrutiny as new details of shooting response revealed

Authorities waited hours to warn the public that the gunman, who would eventually kill 22 people, was using a fake police car

Police in Nova Scotia knew that a gunman carrying out a murderous rampage was traveling in a fake police car 12 hours before they warned the public, according to a recently unsealed warrant.

New details of Canada's worst mass shooting were revealed on Tuesday after media outlets successfully petitioned for the unsealing of warrants used during the hunt for the man to search two properties he owned.