Prominent civil liberties groups have been denied intervenor status in the high-profile case of a woman challenging the government's ban on wearing the niqab during citizenship ceremonies.

In a ruling last month, a Federal Court of Appeal judge dismissed the applications of six groups—including the Ontario Human Rights Commission, Canadian Civil Liberties Association and National Council of Canadian Muslims—wishing to intervene in the case of Zunera Ishaq.

Of the six applicants, "none has persuaded me that it will advance different and valuable insights and perspectives that will actually further the Court's determination of the matter," Justice David Stratas wrote in his decision.

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