Insider role cannot be ruled out in Pak Mosque explosion: Policeman
Police say they are investigating how the suicide bomber got into a heavily guarded police area

Peshawar Police Chief Ijaz Khan said mass arrests had been made in connection with a Pakistan mosque bombing that killed more than 100 people on Monday. Reuters on Wednesday.
He said police were investigating how the suicide bomber got into a heavily guarded police area and could not rule out internal support to carry out the attack.
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