PARSIPPANY - (AP) - State officials plan to demolish the historic main building at the closed Greystone Park Psychiatric Hospital in northern New Jersey.

Treasury Department spokesman Bill Quinn tells The Star-Ledger that officials recently made the decision after receiving six "expressions of interest" from groups interested in redeveloping the 678,000-square-foot Kirkbride Building on the hospital's campus in Parsippany. It was built in 1876 and closed in 2008.

Quinn says all those plans would involve "some state aid or subsidy," and the state has no money allocated for the project. Although there is a federal historic tax credit, there is no state historic credit and Quinn says several of the proposals depend on the state adopting such a credit.

Officials tentatively plan to start the demolition work in February or March.