An additional five rhesus macaque monkeys that escaped from a South Carolina research facility last week have been recovered, meaning about a dozen of the rhesus macaque primates remain at large.

A research facility in Yemassee, S.C., has recovered 25 of the 43 monkeys that escaped from the laboratory last week after a caretaker accidentally left the door to their enclosure unsecured.

Authorities say more than half of the monkeys bred for medical research that escaped from a compound in South Carolina have been recovered unharmed.