Suspicious letter addressed to US President Obama has tested positive for the deadly poison ricin, as did a letter to a Republican Senator.
The FBI assessment is that there are no links between the poison letters to Obama and Senator Roger Wicker and the bombs at The Boston Marathon.
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The presidential candidate has called for the FBI to fully explain the new emails that have come to light.
The American Airlines plane caught fire at Chicago O'Hare airport, prompting an evacuation of the plane.
As the number of people sleeping rough in England increases significantly, a new bill aimed at cutting homeless has passed a second reading.