The Supreme Court has rejected an anti-abortion group’s bid to force disclosure of confidential Planned Parenthood and federal government records about a contract for family planning services in New Hampshire.

The justices on Monday let stand a ruling that allowed the U.S. Health and Human Services Department to withhold some documents in a Freedom of Information Act lawsuit filed by New Hampshire Right to Life.

Abortion opponents objected to a $1 million contract HHS awarded Planned Parenthood in 2011 for family planning services in New Hampshire. The move followed action by the state’s Executive Council to stop a long-standing practice of funneling federal money to the clinics. Councilors who opposed funding Planned Parenthood said they didn’t want grant money given to the organization because it provides abortions using private funds.