Tae Yong-ho, a former North Korean diplomat turned South Korean lawmaker, resigned from his seat on the ruling party’s senior advisory body on Wednesday, after a series of controversies put the high-level defector’s political career in question.

Tae announced the decision to voluntarily step down from the People Power Party’s five-member Supreme Council ahead of a meeting of the party’s ethics committee, which was set to discuss his case the same day.

The lawmaker representing Seoul’s Gangnam district in South Korea’s parliament has become entangled in multiple scandals in recent months, facing allegations that he accepted illegal donations, took inappropriate