Jatiya Party Secretary General Moshiur Rahman Ranga, MP, has been removed from all his posts in the organisation.
Jatiya Party Chairman GM Quader made the decision and it has already been implemented, said a statement issued on Wednesday.
Ranga, an MP from Rangpur-1 and the opposition chief whip in parliament, was not immediately available for comment.
Ranga had previously served as the state minister for local government and rural development in the Awami League-led coalition government in 2014.
He was appointed the Jatiya Party's secretary general in 2018 while the party's founder HM Ershad was alive.