Ling Jihua -- whose son died in a Ferrari crash in Beijing in 2012 -- was dismissed as the head of the United Front Work Department of the party's Central Committee, the official party mouthpiece the People's Daily said in a one-line report.
Anti-corruption authorities have opened an investigation into Ling for "suspected serious disciplinary violations" -- normally a euphemism for corruption -- the official Xinhua News Agency reported last week.
Ling found himself in the media spotlight after the death of his son Ling Gu in March 2012.
Two young women who were also in the Ferrari -- one nude and the other partly clothed -- were seriously injured.
Also Read
Despite a media blackout surrounding the crash, Internet users questioned how the son of a party official could afford a car worth a reported five million yuan (around USD 800,000).
A number of his relatives have also fallen, with the party in June announcing an investigation into his brother Ling Zhengce, a former provincial politician, for "serious discipline violations".
News magazine Caixin reported on Monday that his brother-in-law Gu Yuanxiu had also been taken away for investigation on the same vague charges.
The Communist Party's anti-corruption drive began after Xi Jinping took its helm two years ago, with the powerful former security chief Zhou Yongkang being the highest-ranking official ensnared.