The roof of one Sandy Hook's Fort Hancock's historic buildings that federal officials are hoping to save through a leasing program partially collapsed overnight.
The National Park Service posted word of the collapse Friday morning on the Facebook page of the committee overseeing the leasing program. The collapse occurred at Building 23, a barracks building more than 100 years old that is being offered for lease for non-profit or educational purposes.

A spokesperson for the park service, said law enforcement officers on patrol discovered the collapse around 7:30 Friday morning. He said no one was around when the collapse occurred because the park was closed.
The building has been fenced off since last fall when a truss broke loose and punctured a wall.
News of the collapse comes on the day the first round of requests for proposals are due for six buildings in the complex.
Yun said the building was not being offered for lease in this first round of RFPs.
"The park is in a race against time to lease historic buildings so that they may be saved through adaptive reuse," the park service wrote on the Facebook page of the Fort Hancock 21st Century Federal Advisory Committee. "This only makes us more determined to do all that we can do to save Fort Hancock. Our resources may be limited, but our creativity and determination know no bounds."
Park officials are asking visitors to avoid the area of Building 23 out of concern there may be further collapse.