Republican Rep. Chris Collins has slammed fellow New Yorker Louise M. Slaughter as a “despicable human being” over the ethics charges the Democratic congresswoman filed against him.

“She’s on a witch hunt, she’s a despicable human,” Collins said of his colleague, Fox News reported. “You don’t go after another member.”

Collins’ remarks come after Slaughter filed charges with the Office of Congressional Ethics in response to reports he shared nonpublic information about an Australian biotech company.

Collins is an investor and board member of the company called Innate Immunotherapeutics Limited.

On Thursday, the House Ethics Committee announced that the OCE recommended that it extend its review into the allegations that Collins shared nonpublic information in the purchase of Innate stock.

The Ethics panel released a 29-page report from the OCE detailing the allegations against Collins.

[Report: Ethics Office Investigating Chris Collins Investments]

The OCE also recommended that the committee conduct additional review into the allegation that Collins discussed clinical trials for Innate with an employee at the National Institutes of Health.

But the office also recommended that the Ethics panel dismiss allegations that Collins purchased discounted stock that was not available to the public.

“Nothing of substance is there at all,” Collins said of the review, adding that he “always followed ethics,” and that he was “disappointed” in the Ethics Committee.

A representative for Slaughter told Fox News that the congresswoman “doesn’t need to defend herself,” and highlighted that she authored the so-called STOCK Act to ban insider trading by federal officials, including members of Congress.

“The Office of Congressional Ethics report released today is pretty clear about what Congressman Collins has done,” Slaughter’s office said.