AceShowbiz -

Dr. Luke reacts to Ke$ha's sexual assault accusations. The producer denies any wrongdoings and files a countersuit against the singer. He accuses Ke$ha and her mother Pebe of lying and claims that "extortion [was] the ultimate goal of this defamatory campaign."

"As set forth in the complaint that we have filed on behalf of Dr. Luke, Kesha and her mother are engaged in a campaign of publishing outrageous and untrue statements about Dr. Luke to third parties, including scurrilous and false statements of purported physical and mental abuse of Kesha," his attorney says.

"These are allegations that Kesha and Pebe have themselves admitted are false. The complaint explains that Kesha and her mother Pebe have wielded these defamatory statements in an attempt to extort Gottwald into releasing Kesha from her exclusive recording agreement with Dr. Luke."

"We understand that Kesha has filed a lawsuit of her own against Dr. Luke, though we have not yet seen it. Undoubtedly, Kesha's lawsuit is nothing more than a continuation of her bad and offensive acts. We are confident that Dr. Luke will prevail in all matters, and that our client will be awarded substantial damages for this malicious conduct."