Speaking from the Oval office on Monday, President Barack Obama said the Orlando shooter Omar Mateen had apparently been inspired by extremist information on the Internet.
The head of the FBI confirmed that the gunman had been on their radar for 10 months but had not been deemed a serious, immediate threat.
Meanwhile, Presidential hopefuls Hillary Clinton and Donald Trump used speeches in separate states to offer their reaction to the killing and wounding of over 100 people early on Sunday.
Our US correspondent Kevin McAleese has more...
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