Trim, fit, full of life, he was midway through a doubles tennis game, casually walking with his partner from one end of the court to the other, when he dropped dead from a heart attack.

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Mohammad Aslam Khan, head of Karachi counter-terrorism cell, told the BBC that the attack was "clearly targeted" at the Bohra Ismaili Shia community, from which most of the dead and injured came.

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When a reporter passed away a few years back, dropping dead from an unexpected heart attack, his friend placed the potted plants he kept at the office on the now-empty desk.

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Many of the dead and wounded were from a nearby passenger bus, which bore the brunt of the attack.

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