Chief of his own faction Pakistan Muslim League (Nawaz) Muhammad Nawaz Sharif, demanded that Karachi Naval base attack should be probed. While addressing a party workers convention in Mansehra on Tuesday, Nawaz said that anti-Pakistan forces were behind Karachi attack. He said that we should investigate into the attack and anyone found lenient be taken to the task. He deplored that the unanimous resolution passed by the joint sitting of the parliament regarding Abbottabad raid was not yet implemented. He wondered as to why we afraid from accountability.