Taliban have claimed responsibility for a suicide attack near the Afghan border that killed 22 policemen, saying it was their first retaliation for their leader's death. A suicide bomber got into barracks near the Torkham border crossing late Thursday when officers were preparing to break their fast for Ramadan. Officials said the attacker triggered explosives strapped to his body, killing 21 people and wounding 15 others. One more died of injuries overnight, they said. "We claim responsibility for the blast," Azam Tariq, spokesman for Tehreek-e-Taliban Pakistan (TTP), said in a telephone call from an unknown location. "This is our first response since the death of our chief Baitullah Mehsud," Tariq told a foreign news agency. "We will continue similar attacks in the future also."