Exact details to whom the payments had been made are not disclosed, but a PricewaterhouseCoopers report commissioned by Woodford alleged that some of the fees had gone to a company incorporated in the Cayman Islands.
Woodford was fired Friday for questioning Olympus' accounting practices, with the board describing the ordeal as a culture clash between him and the company's Japanese leadership. Olympus' shares dropped 22 percent on the Tokyo Stock Exchange on Monday, following an 18 percent drop on Friday.
Olympus denies any wrongdoing and says it's considering legal action against Woodford.
Mr. Woodford, a British executive, was stripped of his title Friday for reasons the board described as a culture clash between him and the company’s Japanese leadership. He had been appointed president of Olympus in April and chief executive only last month.
Mr. Woodford later said that his dismissal had come after he commissioned an investigation by the accounting firm PricewaterhouseCoopers that found unusually high advisory fees paid out by Olympus between 2006 and 2010 as part of its acquisition of the medical equipment company, Gyrus.
Separately, Mr. Woodford had also questioned the acquisitions of three companies in Japan in 2008, for a total of $773 million, seemingly unrelated to Olympus’s main business, and the subsequent writing down of their value by three-quarters in the same year.