CASTLE HILL - Four children are missing from the Castle Hill neighborhood.

Police say Quallasia Nolon, Roy Nolan, Kywine Velazquez and Michael Velazquez were last seen Monday inside their apartment building on Lacombe Avenue.

The children's foster mother fears for their safety as two of the children suffer from pre-existing health conditions.

Police are asking anyone with information to call Crime Stoppers at 1-800-577-TIPS.