US Capitol Police say they have re-opened the Hart Senate building, following an evacuation.
Tests on a suspicious package were negative, Reuters reports.
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The move makes the UK the first major economy to set a target to cut emissions to net zero by 2050.
A toddler in Turkey had a miraculous escape after falling from a building in Istanbul as she was caught by a teenager.
The incident happened as the Chancellor attended the formal appointment of Germany’s new justice minister.