The death toll from the Las Vegas massacre rose to 59, while the number of injured increased to 527, police said Monday.

The Las Vegas County sheriff also said 18 additional firearms were found at the shooter’s house in Mesquite, Nev., along with some explosives and several thousand rounds of ammo.

In addition to the firearms at his home, the killer — Stephen Paddock, 64 — had up to 20 guns in his hotel room at the 32nd floor of the Mandalay Bay Hotel and Casino.

He shot himself dead after committing the worst mass shooting in American history