BETHLEHEM, Pa. -

Bethlehem police officer Kelly Walbert has been placed on administrative leave, but Police Chief Mark Diluzio isn't saying why.

Diluzio, who became chief in January, said no information is being released because it is a disciplinary matter.

He won't even say when Walbert's administrative leave started or when it will end.

Walbert was working as a school resource officer at Liberty High School in the city.