Rome, June 12 - An Italian Senator with the anti-establishment 5-Star Movement (M5S) who criticized leader Beppe Grillo on Wednesday said that she had no intention of leaving the group. Dissent came after Senator Adele Gambaro said comedian-turned-politician Grillo, who frequently communicates his political thoughts via an often angry blog where no holds are barred, was the root of the M5S's problems. Grillo subsequently asked Gambaro "to leave the M5S as soon as possible". "I have absolutely no intention to leave the group. I am still in the 5-Star Movement and will stay until someone decides to expel me," Gambaro said. Grillo's hard line has not stamped out criticism within the movement, which captured around a quarter of the vote in February's general election but failed to make an impression in local elections that saw the centre-left complete a clean sweep of the 16 provincial capitals up for grabs, including Rome. "We are too Grillo-dependent", M5S Senator Bartolomeo Pepe told Rome daily Il Messaggero, adding that the movement was heading towards "self-destruction".