(Courtesy photo)

Tatiana Martins, who oversaw the investigation of Michael Cohen as chief of the public corruption unit at the U.S. attorney’s office in Manhattan, has left the office to rejoin Davis Polk & Wardwell as a partner.

Martins, 41, previously had two stints at Davis Polk as an associate, broken up by travel and volunteer work. After her last time at Davis Polk, she joined the U.S. Attorney’s Office for the Southern District of New York in 2012 and served in several units, including general crimes, narcotics and public corruption. She became chief of the public corruption unit last summer.

“To go back as a partner in a premier white-collar practice with people who I know and love was, for me, a great opportunity I could not pass up,” Martins said in an interview Tuesday.

On why she chose to leave the office now, Martins said it was a matter of life circumstances. “It was the right time for me,” she said. “It was a great step that I wanted to take advantage of. I felt that I really had a wonderful and great experience at the U.S. attorney’s office, and it was time for a new chapter.”

Martins’ departure comes as the privilege review of documents from Cohen, longtime attorney to President Donald Trump, is drawing to a close. Martins declined to comment on the Cohen investigation and the potential for any charges arising out of it.

Besides the Cohen investigation, Martins oversaw major investigations and tried high-profile cases to verdict, including against former New York Senate Majority Leader Dean Skelos and former New York Assembly Speaker Sheldon Silver.

Russell Capone, her deputy, has become the new chief of the corruption unit.