Terry Moran, of ABC News, has tweeted that a second letter sent to the US Senate has tested positive for the poison ricin.
BREAKING: @abc has learned a SECOND letter sent to the US Senate has tested positive for the poison ricin.
More top news
Heavy showers set to spread into western areas tomorrow.
Andy Murray is Britain's last hope of a 2015 Wimbledon win after overcoming an apparent shoulder injury to beat Italy's Andreas Seppi.
New Tour de France time-trial record set after Australian Rohan Dennis raced into the lead during Stage one of the competition.