The first photographs from inside the hotel room used by Stephen Paddock during his killing spree show the fire power he used to kill 59 people in Las Vegas.

One image appears to show an assault rifle fitted with a legal modified stock, which uses the weapon's recoil to allow the shooter to fire rounds at a speed approaching that of a fully automatic gun.

Police confirmed that Paddock had fitted two "bump stocks", which can be obtained for as little as $99 (£75).

A second picture obtained by Boston25 News shows an assault rifle, abandoned on the carpet, fitted with a bipod and scope.