Chicago Alderman Ed Burke (D), whose law firm formerly worked for the Trump Organization in the city, was charged with attempted extortion Thursday for reportedly attempting to use his city council position to solicit business to the firm.

The Chicago Sun-Times reported that Burke allegedly tried to persuade a fast-food company to become a client of his firm after the company sought Burke’s support for a remodeling project in the city. Evidence against the 50-year veteran of the Chicago city council include wiretapped cell phone conversations, according to the newspaper.

{mosads}His firm, Klafter and Burke, worked for President Trump for years in Chicago, where the firm performed property tax appeal work that the Sun-Times reported last year saved the Trump Organization more than $14 million in taxes over a decade.

Burke has denied any wrongdoing surrounding his law firm or city council office, and told the Sun-Times last year that investigators would find nothing “amiss” in his business dealings.

“As you are aware, there have previously been several other investigations such as this. In every instance we cooperated fully. And in every instance nothing has been found,” Burke said last year.

“So once again we will be cooperating fully, and I am completely confident that at the end of the day nothing will be found amiss in this instance, either,” he added at the time.

Burke, a Democrat, has faced criticism locally for his past work with the president and last year ended his firm’s relationship with the Trump Organization. But the controversy surrounding his past work is thought to have been a major factor in the primary election defeat of his brother, state Rep. Dan Burke (D), last year.