More than 40 monkeys escaped from a bio-medical research lab in South Carolina after a caretaker accidentally failed to secure a door

More than 40 monkeys escaped from a bio-medical research lab in Beaufort County , South Carolina , on Wednesday afternoon .

A caretaker accidentally failed to secure a door at an enclosure, allowing the primates to escape.

The primates are described as very young females weighing approximately 6-7lbs, the animals have never been used for testing.