The prosecution also urged the court to impose a penalty of 126.2 billion won ($98 million) on Choi, who is facing 16 charges, including abuse of power, coercion and bribery, reports Efe news.
Choi, who did not hold any public office, was arrested in November 2016 for interfering in state affairs and extorting money from around 50 companies, including some of South Korea's major family owned businesses such as LG, Hyundai and Samsung in return for official favours.
On Thursday, the prosecutors also sought a four-year prison sentence for Shin Dong-bin, Chairman of the Lotto group, accusing him of paying 7 billion won in bribes to Choi, although Shin has pleaded not guilty.
Samsung heir and de-facto head Lee Jae-yong was sentenced to five years in prison in August for his role in the scandal.
The prosecution had also demanded a six years prison sentence and a 100 million won fine for former Park aide An Chong-bum, who is accused of accepting bribes from a plastic surgeon in exchange for commercial favours.
The corruption scandal involving Park and Choi hit the country toward the end of 2016 and has led to widespread protests and Park's impeachment, who has been under house arrest since March pending ruling in her trial.
(This story has not been edited by Social News XYZ staff and is auto-generated from a syndicated feed.)
About VDC
Doraiah Chowdary Vundavally is a Software engineer at VTech . He is the news editor of SocialNews.XYZ and Freelance writer-contributes Telugu and English Columns on Films, Politics, and Gossips. He is the primary contributor for South Cinema Section of SocialNews.XYZ. His mission is to help to develop SocialNews.XYZ into a News website that has no bias or judgement towards any.