The California Fair Political Practices Commission says it will look into whether the Church of Jesus Christ of Latter-Day Saints" failed to report the complete value of the work it did to support the Yes on 8 campaign.
A gay rights activist filed a complaint two weeks ago. A representative from the church refused to comment on the investigation.
Last week, the state supreme court agreed to hear lawsuits that claim Proposition 8 improperly revises the state constitution.
