Former Vice-president for Legal Affairs, Mohammad-Ali Abtahi, who is also a senior MCA official, said that Karroubis departure came despite calls by other MCA members for him to remain in his position, according to ISNA.
Abtahi said that Karroubi had announced his decision at an MCA meeting on Sunday evening and that there would have to be further deliberation to find a replacement candidate.
Karroubi, twice the Speaker of Parliament in Iran, caused a stir during the June presidential elections when he accused radical Islamist Mahmoud Ahmadinejad of winning the race through vote fraud.
