(CBS) NASCAR’s Danica Patrick has filed for divorce from her husband of seven years, Paul Hospenthal.

Patrick filed for divorce on Jan. 3 in the Superior Court of Arizona in Maricopa County.

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“My marriage is irretrievably broken and there is no reasonable prospect of reconciliation,” she said in the filing.

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Court documents indicate there was a prenuptial agreement signed and no alimony will be paid.

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“I am sad to inform my fans that after 7 years, Paul and I have decided to amicably end our marriage,” Patrick wrote on Facebook. “This isn’t easy for either of us, but mutually it has come to this. He has been an important person and friend in my life and that’s how we will remain moving forward.”