CHRISTCHURCH, NEW ZEALAND - MARCH 15: Police speak to a resident as they cordon off Linwood Avenue near the Linwood Masjid on March 15, 2019 in Christchurch, New Zealand. 49 people have been confirmed dead and more than 20 are injured following attacks at two mosques in Christchurch. Four people are in custody following shootings at Al Noor mosque on Dean's Road and the Linwood Masjid in Christchurch. Mosques across New Zealand have been closed and police are urging people not to attend Friday prayers as a safety precaution. (Photo by Kai Schwoerer/Getty Images)
Police stand guard near the Linwood Masjid as security is stepped up at mosques worldwide. Getty. 

Christchurch shooting: Security increased at mosques around the world


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