An attacker killed 22 people and injured dozens more, police say. Many used social media to offer and appeal for help, others used it as an opportunity to troll and put out false information.

Reports that a gunman was on the loose at a nearby hospital, that Grande had been injured in the blast and that she had immediately retired from music all circulated within hours of the explosion which British police are treating as a terrorist incident.

Here’s a round up of the fake news stories to watch out for so far:

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