COLUMBUS, Ohio (AP) -- An environmental organization is asking an Ohio judge to force the state Department of Natural Resources to disclose plans for oil and gas drilling at state parks and other public properties.

A lawsuit filed in Columbus by the Ohio chapter of the Sierra Club says the department has ignored requests for public documents related to the issue. A club manager says the first request was made in October, and a lawyer says additional requests were made in November and February.

A natural resources spokesman tells the Columbus Dispatch for a Tuesday report (http://bit.ly/Ilb7sI ) that the agency is working to fill the requests and will make the information available.

A law enacted in September opens state properties to drilling. Officials have been tasked with developing terms for leases to drilling companies.

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Information from: The Columbus Dispatch, http://www.dispatch.com