(CNN) -- More than a dozen boys remained at large Tuesday after escaping from a detention center on the outskirts of Nashville, Tennessee, a spokesman for the Tennessee Department of Children's Services said.
In all, 32 teens escaped from the Woodland Hills Development Center late Monday, Children's Services spokesman Rob Johnson told CNN.
As of Tuesday, 15 had either turned themselves in or had been caught on nearby roads, Johnson said.
The teens left their dorms around 11 p.m. Monday and began running around a large yard at the facility, Johnson said.
The yard is surrounded by a fence. At some point, they discovered a way out under the fence and escaped, Johnson said.
It is unknown if this was a planned or spontaneous escape, he said.