A group in Saudi Arabia apologised and deleted a Twitter post showing an image of an Air Canada passenger plane veering towards Toronto's tallest skyscraper with a warning against meddling in others' affairs.
Some on social media noted the image was reminiscent of scenes during the September 11, 2001, attacks on the United States, when nearly 3,000 people were killed by 19 hijackers - 15 of whom were Saudi nationals - who flew airliners into the World Trade Center's twin towers and the Pentagon.
