Courtney Love accused Dave Grohl of attempting to seduce her 19-year-old daughter, Frances Bean Cobain.
She made the accusations on her private Twitter account, claiming that her daughter's roommate told her that Grohl "hit on Frances."
Love also threatened Grohl and talked about his "pathology," saying that Foo Fighters drummer Taylor Hawkins resembles Cobain and is in the "submissive drummer position" in the band. She also claimed that Grohl named his daughter Violet, which happens to be the name of one of Courtney Love's biggest hits.
Love also said that Grohl is "sexually obsessed" with Kurt, after her driver told her Grohl had "his hands all over" Frances in his car.
This isn't the first time Love has attacked Grohl in public. In November, she went on a tirade against him at a festival in Brazil after she saw a fan carrying a poster of Kurt Cobain in the audience.
Dave Grohl responded to the accusations in a statement, which said: "Unfortunately Courtney is on another hateful Twitter rant. These new accusations are upsetting, offensive and absolutely untrue."