Police say Las Vegas gunman planned ‘extensively,’ used cameras to monitor officers as they approached

Investigators trying to determine what sparked the deadliest mass shooting in modern U.S. history have found the massacre to be the work of a sophisticated planner with the means and desire to inflict unprecedented carnage.

But on the second full day after Stephen Paddock smashed out the windows of a high-floor suite on the Las Vegas Strip and opened fire on a crowd of unsuspecting concertgoers, authorities still were trying to understand what drove him to such evil.

Several new details emerged Tuesday about Paddock — a 64-year-old retired accountant — and how he worked methodically to thwart law enforcement as he killed scores of people and injured hundreds more.

As he fired round after round during an 11-minute stretch from a suite on the 32nd floor of the Mandalay Bay Resort and

Read More at: https://www.washingtonpost.com/news/post-nation/wp/2017/10/03/as-las-vegas-grieves-investigators-struggle-to-piece-together-the-motives-behind-shooting/