Hugh Hefner's Son Arrested For Alleged Attack on Playmate of the Year

Hugh Hefner's 21-year-old son Marston was taken into custody Sunday evening for allegedly assaulting 2011's Playmate of the Year, Claire Sinclair. 

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Police were called to the pair's Pasadena home shortly after 11 p.m. due to a domestic-violence call, E! News reports. 

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Sinclair had suffered minor injuries according to authorities. Marston was charged with battery on a spouse (the pair are not married, but California state law also considers a cohabitant a spouse) and released early Monday morning after posting $20,000 bail. 

Monday, Sinclair seemed to comment on the situation, tweeting, "There's two types of pain in the world - pain that hurts you, and pain that makes you stronger. All of your positivity is giving me strength." 

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Shortly before the altercation, Sinclair retweeted a photo of her with Hugh from a Grammy-themed fundraiser at the Playboy Mansion. Marston was not pictured. 

"Had so much fun with you guys xoxoRT @hughhefner." she wrote. 

Marston is the son of Hugh and 1988 Playmate of the Year Kimberley Conrad.