(Bloomberg) -- The director of the Witcher 3, the most successful video game for Polish publisher CD Projekt SA, resigned after facing workplace bullying allegations, which he denies.

The company had been conducting a months-long investigation into accusations of mobbing, a Polish term for office bullying, against the game director Konrad Tomaszkiewicz, according to an email to CD Projekt staff reviewed by Bloomberg. In the message, Tomaszkiewicz wrote that a commission had been formed to look into these allegations and had found him not guilty.

“Nonetheless, a lot of people are feeling fear, stress or discomfort when working with me,” he wrote. He apologized to staff “for all the bad blood I have caused.”

Tomaszkiewicz’s work on the Witcher 3 inspired the creation of a popular Netflix series, both based on novels by the Polish author Andrzej Sapkowski, and helped turn CD Projekt into the country’s most valuable company. Tomaszkiewicz is also listed as second director and head of production in the credits for Cyberpunk 2077.

His departure is a sign of more turbulence at CD Projekt, which has been embroiled in controversy since the December release of Cyberpunk. The highly anticipated role-playing game was full of glitches and was nearly unplayable on some platforms, leading Sony Group Corp. to pull it from the PlayStation Store. The negative reception wiped out CD Projekt’s 2020 share gains and took them to a two-year low.

Tomaszkiewicz was expected to play a significant role in the company’s next game in the Witcher series. When reached for comment, Tomaszkiewicz confirmed his departure and said he was “sad, a bit disappointed and resigned.” A representative for CD Projket declined to comment.

In the email to employees, Tomaszkiewicz said the decision was agreed upon with the company’s board. “I am going to continue working on myself,” he wrote. “Changing behavior is a long and arduous process, but I’m not giving up, and I hope to change.”

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