A police spokesperson has confirmed to Associated Press that the death toll following the explosion at an apartment block in New York has risen to seven.
Seventy four people were also left injured after two buildings collapsed following a gas leak explosion in Harlem.
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Paramedics attended a scene in Willesden, north-west London, on Monday afternoon where they found the teenager with stab wounds.
The popular game relies on Google Maps, a problem in South Korea as those functions are limited by the government.
A Met Office warning covering much of England and south-east Wales is expected to remain in place until 11am.