Jeremy Piven is the latest famous man in Hollywood to be named in an allegation of sexual misconduct.

The 52-year-old actor has been accused of sexual assault by actress and former reality TV star Ariane Bellamar, who says she came in to contact with Piven on the set of the HBO series “Entourage” and at the Playboy Mansion.

In a string of tweets posted on Monday, Bellamar detailed her alleged encounters with Piven, writing that he “cornered [her] & forcefully fondled my breasts & bum” on two occasions.

Hey@jeremypiven! ‘Member when you cornered me in your trailer on the#Entourageset? ‘Member grabbing my boobies on the 🛋 without asking?? — Ariane Bellamar (@ArianeBellamar) October 30, 2017

‘Member when I tried to leave; you grabbed me by the ass, looked at yourself in the mirror, & said what a ‘beautiful couple’ we made?#MeToohttps://t.co/liD7irs0o0 — Ariane Bellamar (@ArianeBellamar) October 30, 2017

Jeremy Piven, on two occasions, cornered me & forcefully fondled my breasts & bum. Once at the mansion & once on set.#MeToo@AriMelber@CNNhttps://t.co/liD7irs0o0 — Ariane Bellamar (@ArianeBellamar) October 30, 2017

Bellamar also says that the actor sent her “abusive” and “explicit” texts, and notes that HBO has footage of the two together.

“And don’t try to deny it, sir,” she added.

And, don’t try to deny it, sir.@HBOhas us on 📼 together, & I’m sure@sprinthas electronic back-ups of your abusive, explicit texts.#MeToohttps://t.co/liD7irs0o0 — Ariane Bellamar (@ArianeBellamar) October 30, 2017

A representative of Piven provided a statement on behalf of the actor, in which he denied assaulting Bellamar, toHuffPost’s Yashar Ali.

In a statement sent by his spokeswoman, Jeremy Piven denies assaulting@ArianeBellamarpic.twitter.com/CC8BZoAUh0 — Yashar Ali 🐘 (@yashar) November 1, 2017

HBO also released a statement noting that the network has a “zero tolerance” policy for the kind of behavior Bellamar describes in her tweets.

“Today, via the press reports, is the first we are hearing about Ariane Bellamar’s allegations concerning Jeremy Piven,” the statement read. “Everyone at HBO and our productions is aware that zero tolerance for sexual harassment is our policy. Anyone experiencing an unsafe working environment has several avenues for making complaints that we take very seriously.”

The actor starred on the HBO series for eight seasons, picking up three Emmy Awards and a Golden Globe for his performance as high-powered agent Ari Gold. He later reprised the role in a feature film continuation of the series released in 2015.

Bellamar apparentlyhad a “small role” on the show, according to IMDb, but went on to find greater success on reality TV in projects like ABC Family’s “Beverly Hills Nannies.”

A post shared by Ariane Bellamar (@arianebellamar)on Oct 31, 2017 at 5:23am PDT

This article originally appeared on HuffPost.