NILES, Ohio - Niles city hall remains closed due to water problems inside the building on West State Street.

Niles officials sent employees home Monday after an unknown water problem surfaced inside the building, leaving damp areas in the basement.  

There has been concern about the building over the years because of a leaky roof and there is now concerns about mold and mildew inside.

The Lewis Construction company is at the Niles city hall building today to do an evaluation and to determine if the building is safe and can reopen on Wednesday.

Stay with 21 News and wfmj.com for the latest on this developing story.