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After three months of investigation, police still don’t know why Stephen Paddock opened fire from the Mandalay Bay casino-hotel.
John Locher / AP
The Mandalay Bay resort and casino, right, overlooks an outdoor festival grounds across the street, left, Tuesday, Oct. 3, 2017, in Las Vegas. Authorities said Stephen Craig Paddock fired from a hotel window onto a crowd, killing dozens and injuring hundreds at a music festival. Stephen Paddock
