A California gay rights activist has added new allegations to his formal complaint accusing the Mormon church of understating the financial backing it gave to help pass a gay marriage ban in California.

Fred Karger, founder of Californians Against Hate, says The Church of Jesus Christ of Latter-day Saints hid its role in establishing the National Organization for Marriage, a New Jersey-based group that opened a California office last year.

Karger filed his supplemental complaint Thursday with the California Fair Political Practices Commission, which already is investigating his earlier allegations against the church.

A spokeswoman says the church did not establish NOM and has already reported the $190,000 of in-kind contributions it made to the "Yes on 8" campaign.