Cesar Medina, the head of Machu Picchu archaeological park, told AFP that officials were going to hire more guards and install more surveillance cameras.
He said there was nothing in local laws barring people from spreading human ashes in public.
But this will now be barred at Machu Picchu for health reasons, Medina said.
Classified as a UNESCO World Heritage site, the site welcomes an average of 5,600 visitors a day but until now had only four cameras and a small team of security guards.
The ancient citadel, built in the 15th century by Incan emperor Pachacuti, sits at an altitude of 2,438m in the Peruvian Andes.
