CALGARY - The group that accredits zoos across Canada says it's satisfied with a report into how a gorilla at the Calgary Zoo grabbed hold of a knife in its enclosure.

Bill Peters, national director of the Canadian Association of Zoos and Aquariums, says the zoo's report explained how a keeper left the knife in the gorilla's enclosure and what steps have been taken since.

Pictures snapped by onlookers show the gorilla, Barika, clutching the knife in her black, hairy hand and briefly holding it up near another animal.

Zoo officials said at the time the primates don't understand the idea of using weapons and were never in any real danger.

Peters says the zoo has taken steps to ensure, as much as humanly possible, that items aren't left in an enclosure.

He says the matter was dealt with satisfactorily and won't affect the zoo's accreditation in any way.