Actress Ariane Bellamar, who starred in Suicide Squad and The Hangover 3, made the accusations on Twitter this week, in which she alleges Piven groped her both on the set of Entourage and at the Playboy Mansion.
Piven is currently the star of new CBS drama Wisdom of the Crowd. A CBS spokesperson has told Deadline that they are “aware of the media reports and are looking to the matter.”
HBO, which produced Entourage, has also issued the following statement to The Hollywood Reporter: "Today, via the press reports, is the first we are hearing about Ariane Bellamar’s allegations concerning Jeremy Piven. 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."
This article originally appeared on Marie Claire.