Denver officials said they are not aware of any threats made to President Barack Obama's campaign, but are exploring all possibilities as they investigate the shooting at his re-election headquarters.
Right now, no one is in custody and investigators are looking at surveillance video to see if a vehicle can be identified.
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The presenter's former bandmate failed to impress the judges with his rendition of OneRepublic's Counting Stars.
Girl group 4th Power, a twerking grandmother and a skiving dental receptionist were among the contestants hoping to be the next big thing.
Rain expected in the next 24 hours - no surprise there with it being a Bank Holiday - but there'll also be some brighter skies in places.