Why were some neighbours unhappy?

Police have found the four children from Stonehouse near Glasgow only a few yards away from their homes. They were found in a cellar of an empty building directly across the street from where one of the children lives. Although they are tired, cold and hungry, they are otherwise quite well. It seems that the four were playing in the cellar and somehow managed to lock themselves in. One hundred police and two hundred volunteers joined in the search for the children, but no one looked in the cellar because they thought it was impossible for the children to get in there. The parents of the four were extremely pleased that their children were safe, but some neighbors were dissatisfied and unhappy, because they thought the police had taken so long to find the children.