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The couple was celebrating Jenner's 26th birthday at hotspot Guys & Dolls when Nicole threw a drink at Francis, who she claims was "unrelentingly" hitting on a friend, Jenner tells TMZ.com.

According to a post on Jenner's Twitter.com blog, Francis then "pulled (Nicole) to the ground, punched and kicked her".

Club security guards broke up the fight before police were called to the scene.

Jenner claims he then followed Francis out of the venue and punched him in the face - but was struck with a Taser gun.

Nicole alleges she has a bruised cheek and ribs, a swollen face, and a sore stomach, and now plans to press charges against Francis.

Los Angeles Sheriff LaJuana Haselrig tells Usmagazine.com, "A report was taken. It's still under investigation. There were no arrests."