Tehran, June 20 (Xinhua) -- Iran's Acting Police Chief Brigadier General Ahmad-Reza Radan warned on Saturday that the police will deal firmly with any illegal gatherings from now on and will prosecute those who plan such activities, local English-language Press TV reported.

    "I should emphasize that from now on any gathering critical of the election would be illegal," Radan was quoted as saying.

    "Police will deal with the protest firmly and with determination," he said, "those who provoke street protests should know that they will be arrested and prosecuted."

    According to the official IRNA news agency, Iran's Interior Ministry has announced that no permission had been given to hold any rally anywhere in the country on Saturday.

    Iran's Supreme Leader Ayatollah Ali Khamenei on Friday called for calm and patience and urged the defeated candidates to raise complaints about the election through legal channels.

    On June 13, Iran's Interior Minister Sadeq Mahsouli said Ahmadinejad won 62.63 percent of the total ballots on June 12, while his main rival Mir-Hossein Mousavi got 33.75 percent.

    After the official declaration, Mousavi protested "strongly" the "obvious" violations in Iran's presidential election. He also appealed to the Guardian Council for a cancellation of the election result.

    Mousavi's supporters have participated in massive rallies in Tehran and other cities over the past days.