Authorities say two monkeys have been returned to a South Carolina compound that breeds the animals for medical research.

An additional 24 monkeys believed to be among 43 that escaped a South Carolina research facility last week have been recovered, and eyes are on a “sizable group” nearby, police said Sunday, NBC News reported.

A “sizeable group” remains active along the compound's fence line and bedded down in the trees, police in Yemassee, about 50 miles northeast of Savannah, Georgia, said in a statement.