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At least 50 people have been killed after a lone gunman opened fire from a hotel window in Las Vegas.

Deadliest mass shooting in US history.

At least 50 people have been killed and at least 200 injured at an open-air concert in Las Vegas; the worst domestic massacre in the nations' history.

A 64-year old gunman, named locally as Stephen Paddock, flagrantly opened fire at a crowded country music festival concert, from the 32nd floor of the Mandalay Bay Hotel, aiming indescriminately at anyone who just happened to be in the way.

Local law enforcement have said that the shooting was a "lone wolf" attack and that Police are not looking for anyone else in connection with Paddock. A woman, who was suspected of being an associate of the gunman has been located by police.

Sheriff Lombardo confirmed that two off-duty police officers were killed.

Footage posted on social media confirms that a steady stream of "many" bullets were fired into the crowd.

President Trump said in an early morning tweet that; "My warmest condolences and sympathies to the victims and families of the terrible Las Vegas shooting. God bless you!"

More Soon

This is a developing story, and will be updated as more information becomes available.