Police say gunman Stephen Paddock shot a security guard before opening fire on concertgoers. (Oct. 11, 2017)
Mark BermanWashington Post
Since the Las Vegas gunman opened fire from his 32nd-floor hotel suite, killing 58 people at a country music festival last week and injuring hundreds more before shooting himself, questions have swirled around the attack.
Investigators plumbing Stephen Paddock's life in search of answers have been so far unable to explain what motivated him to carry out the rampage, why he stopped shooting and whether he planned even more carnage beyond the Mandalay Bay Resort and Casino.
In recent days, a new level of uncertainty has emerged in the case, as questions also emerged about the law enforcement response to the shooting after police revised their account of what happened before and during the massacre.
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