Hugh Hefner's son, Marston Hefner, was arrested on Sunday night for allegedly assaulting Playboy Playmate Claire Sinclair.
Police in Pasadena, California, said in a statement obtained by OnTheRedCarpet.com that officers were dispatched to a home in the city around 10 p.m. after receiving a call of a suspected domestic violence battery.
"The investigation revealed sufficient probable cause to warrant the arrest of Marston Hefner for domestic violence battery on his 22-year-old live-in girlfriend," the statement said. "The victim sustained minor injuries. The victim was issued an Emergency Restraining Order. Marston Hefner was booked in the Pasadena Jail and bonded out on February 13, 2012, at 2:00 a.m. after posting a $20,000 bail."
Marston Hefner is due to appear in court on March 14 to face domestic battery charges.
Sinclair was the 2011 Playmate of the Year.
"There's two types of pain in the world - pain that hurts you, and pain that makes you stronger," Sinclair Tweeted on Monday, February 13. "All of your positivity is giving me strength."
The Playmate told Maximo TV last year that her relationship with Marston is "tumultuous" and when asked if the couple planned on getting married, she said definitively, "hell no."
Sinclair Tweeted a photo of her at the Musicares Grammy-themed fundraiser at the Playboy Mansion last night, posing with Hugh Hefner and several Playmates.
"If they care about each other, they'll patch it up," Hugh Hefner said in a statement posted by People magazine, when asked about the incident.
Last year, Marston and Hugh Hefner celebrated their birthdays at a party at the Palms Casino Resort in Las Vegas - the Playboy mogul turned 85, while the younger Hefner is 21.
The two, who share a birthday on April 9, were joined by Hefner's former fianc? Crystal Harris, 25, his other son Cooper, 20, Playboy Playmate Anna Sophia Berglund as well as at least 30 other Playboy models.
"Well, as a 15-year-old kid, seeing naked people occasionally...it's just the lifestyle of growing up as Hugh Hefner's son, in his shadow," Marston told GQ in a 2008 interview. "It's not a boo-hoo sob story. But it's not the same as every other kid."
Marston Hefner's and Cooper Hefner's mother is Kimberley Conrad, a former 1988 Playmate of the Year who was married to his father from 1989 to 2010. She is Hugh Hefner's second wife.
Hugh Hefner also a 59-year-old daughter, Christie, and a 56-year-old son, David, with first wife Mildred Williams.