Authorities in the United States say they are dropping charges against a man accused of sending letters containing poisonous ricin to the US President Barack Obama along with a senator.
Prosecutors say they uncovered new information and freed Paul Curtis from custody. Police are now searching the home of another Mississippi man.
Paul Curtis says he respects President Obama, loves his country and would never do anything to pose a threat to him or any other US official.
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Mark Duggan's death in north London in 2011 sparked a week of rioting in cities across England.
The announcement marks the end of a four-and-a-half year campaign by an array of forces against the extremist group.
The top temperature will be around 14 Celsius (57F).