UPDATE: Las Vegas shooter Paddock had an arsenal of 42 guns and a 'bump stock'
By MarketWatch, MarketWatch
Stephen Paddock described as multimillionaire investor and gambler with a father who was a bank robber
Authorities have found 23 guns in Las Vegas shooter Stephen Paddock's hotel room at the Mandalay Bay Resort and Casino, as well as 19 firearms at his home in Mesquite, Nev.
Those are among the latest details that have emerged about Sunday night's mass shooting, considered the deadliest in modern U.S. history after leaving at least 59 people dead and more than 500 injured. Those killed were part of a Harvest Festival crowd that was watching country-music stars perform.
Read:At least 59 killed and 527 injured in mass shooting at Las Vegas concert (http://www.marketwatch.com/story/reports-of-dead-injured-after-mass-shooting-at-las-vegas-concert-2017-10-02)
And see:Here are the 10 deadliest mass shootings in modern U.S. history (http://www.marketwatch.com/story/these-are-the-10-deadliest-mass-shootings-in-us-history-2017-10-02)
What kind of arsenal was found?
Investigators discovered AR-15-style and AK-47-style rifles and a big cache of ammunition in Paddock's room on the Mandalay Bay's 32nd floor, according to a Wall Street Journal report (https://www.wsj.com/articles/las-vegas-suspect-likely-used-automatic-rifle-in-massacre-1506966716?mod=mktw). At least one of the 23 guns at the hotel was outfitted with a "bump stock," a device that modifies a semi-automatic weapon to fire at an automatic rate, a Guardian story (https://www.theguardian.com/us-news/live/2017/oct/02/las-vegas-two-dead-in-mandalay-bay-casino-shooting-latest-updates?CMP=share_btn_tw&page=with:block-59d322b8e4b00d657809d214#block-59d322b8e4b00d657809d214) said.