Stephen Paddock

Probe: Las Vegas shooting meticulously planned, but motive remains a mystery

Probe: Las Vegas shooting meticulously planned, but motive remains a mystery

The Las Vegas gunman meticulously planned the worst mass shooting in modern U.S. history, researching SWAT tactics, renting other hotel rooms overlooking outdoor concerts and investigating potential targets in at least four cities, authorities said Friday.

But almost four months after Stephen Paddock killed 58 people and wounded more than 800 others with a barrage of bullets from the Mandalay Bay casino-hotel, investigators still have not answered the key question: Why did he do it?

Clark County Sheriff Joe Lombardo released a preliminary report on the Oct. 1 attack and said he...

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