Mourners paid their respects outside London’s New Zealand House on Friday, after an attack in a mosque and Islamic centre in Christchurch killed 49.

The shooter livestreamed footage of the attack on Facebook, which social media platforms are now attempting to remove.

He has reportedly published a 74-page manifesto denouncing immigrants and multiculturalism.

New Zealand police has arrested three people in connection to the attack, but has not yet publicly identified the 28-year-old shooter.

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