MINNEAPOLIS (AP) — A national gay rights group is calling for an investigation of disclosure reports filed by groups promoting an amendment to the Minnesota constitution to ban gay marriage.

The Human Rights Campaign accuses the National Organization for Marriage of illegally trying to avoid disclosing the names of donors to the November ballot campaign. The disclosure filed by the National Organization for Marriage’s fund for Minnesota names no individual contributors.

Similarly, the Minnesota Family Council’s Marriage Protection Fund names no individual donors.

But Jeff Sigurdson, assistant executive director for the Minnesota Campaign Finance and Public Disclosure Board, says he saw nothing at first glance on the forms indicating any violations of the board’s rules.

Leaders of the National Organization for Marriage and Minnesota Family Council say they fully complied with the disclosure requirements.

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