Two children were rescued from a Chicago building after they were seen hanging out of a third-floor window, WGN reported.

Passersby saw the children and yelled for an adult to get them away from the apartment, but no one responded, the television station reported.

After a few minutes, one person got a ladder and brought the children back into the apartment, WGN reported.

The whereabouts of the children’s parents were unknown, the television station reported.