Bruno Mars and the Red Hot Chili Peppers performed at half-time of Super Bowl XLVIII where Seattle Seahawks are currently enjoying a comfortable lead over the Denver Broncos.
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The major party leaders' campaigns for the General Election will remain suspended on Wednesday following the Manchester terror attack.
Thousands of people have donated to help the families of the victims - as well as a homeless man who came to their aid.
Some children, particularly those who have been more directly affected, may show symptoms of stress and trauma.