ST. PAUL, Minn. (AP) -

A gorilla at the Como Zoo in St. Paul escapes its main enclosure.

But, zoo officials say a second gorilla-proof barrier kept the animal from roaming free Thursday morning.

The zoo told visitors to get inside a safe shelter, including the conservatory, when the gorilla got out of its enclosure. But, officials say no visitors or animals were ever in danger.

The gorilla is back inside its main pen.