Pink has spoken out against record producer Dr. Luke, who has been in legal confrontations with singer Kesha since she sued him in 2014 for abuse during the years they worked together.

The “Just Give Me A Reason” singer stated in an interview with the New York Times Thursday that although she worked with him on 2006’s “I’m Not Dead,” she won’t collaborate with him again because “he’s not a good person,” adding that she has told him so to his face.

Pink continued that Dr. Luke “doesn’t do good business,” that “he’s not a kind person” and “he doesn’t do the right thing when given ample opportunities to do so.”

Although she said has no knowledge of any of his relations with Kesha, she said, “I don’t really feel that bad for him.”

Kelly Clarkson, who has worked with Dr. Luke on several of her hits, also spoke out recently, stating that she wouldn’t share a writing credit with him on her track “My Life Would Suck Without You” because he was “not a good guy” and she didn’t want her name to appear next to his. Clarkson claims that she’s lost out on potentially millions of dollars as a result.

Much of Kesha’s lawsuit against Dr. Luke, whose real name is Lukasz Gottwald, was dismissed by a New York judge in April 2016. Gottwald’s countersuit against Kesha and her mother for defamation and breach of contract is still ongoing. In August 2016, Kesha dropped her suit against Gottwald in L.A., stating that “this lawsuit [has been] so heavy on my once free spirit, and I can only pray to one day feel that happiness again.”