Al-Qaeda in the Indian Subcontinent, the militant group unveiled by Zawahiri last week to demonstrate his clout despite the rise of Islamic State (Isil), claimed responsibility for the attack on Thursday and said former Pakistan Navy men had carried it out.
"The Naval officers who were martyred on Saturday in the attack on Karachi were al-Qaeda members. They were trying to attack American marines and their cronies", the group said in a statement.
It added that militants had successfully seized an American vessel but were thwarted by Pakistan Navy troops. "The Pakistani military men who died defending enemies of the Muslim nation...are cursed with hell", it added.
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