The move comes days after show-cause notices were served to three party MPs after they shared dais with Mitra.
Mondal is among those who had participated in the blood donation camp organised last week by rebel party MP Somen Mitra and his wife Sikha where the three other party MPs shared dais, inviting threat of disciplinary action against them by TMC leadership.
City Mayor Sovan Chatterjee described the removal of Mondal, who was in the environment and welfare services department, "as a routine matter" of the KMC.
Sikha was earlier suspended by the party for openly criticising Chief Minister Mamata Banerjee for her style of functioning and other matters.