UNITED NATIONS, June 5 (Xinhua) -- The UN Secretary-General Ban Ki-moon condemned on Friday the bomb attack in a mosque in northwestern Pakistan, which reportedly killed at least 30 people.

    In a statement issued by his spokesperson, Ban reiterated his rejection of such indiscriminate and reprehensible acts of violence and extended his condolences to the families of the victims and to the government of Pakistan.

    At least 30 persons were killed in a blast at a mosque during prayer time Friday in Upper Dir district of Pakistan's North West Frontier Province, according to local TV reports.

    Another 60 to 70 people were injured in the blast. Many of the injured were in critical condition.

    No group has claimed responsibility for the blast yet.