Mr Dorrell said her initial escape was down to “keeper error” and the zoo had put in place new measures to ensure it did not happen again.
Despite keepers putting out live traps along routes she had frequented on her trip to the wild, Cinnamon recognised attempts to capture her, and instead skirted around them.
Search efforts were called off temporarily on Thursday, amid concerns she would wander on to neighbouring Ministry of Defence land.
Over the week, searches were carried out on foot, as well as by air using thermal drones.
The woodland environment – dense thicket and brambles – made it “impenetrable” to zoo volunteers.
The story of the fugitive rodent attracted international attention, especially as the zoo reported that she was seemingly “living her best life”, wandering around and eating vegetation.
The animals are native to South America and are the largest living rodents in the world.
