Temporary Detective Chief Superintendent Gordon Lang has urged the public to check on family and friends to make sure "everyone is safe" after the arrest of double murder suspect James Allen.
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Villarrica - one of Chile's most active volcanoes - has erupted, forcing the evacuation of nearby communities.
Footage showing the "truly shocking" moment a teenager was stabbed to death as he rode his bike with friends has been released.
Drinking three to five cups of coffee a day could reduce the risk of clogged arteries and thus heart attacks, a study has found.