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.
More top news
Pet owners have been warned of the skin cancer risk to dogs and cats, amid predictions of a heatwave in the coming days.
Slippery customer was caught out by staff at the pet shop in Florida who confiscated the stolen trouser snake and called in police.
Death rates at UK hospitals are higher at weekends - compared to week days - because patients tend to be more unwell, a new study has shown.