The son of former Pakistani Prime Minister Yousuf Raza Gilani has been kidnapped by unidentified gunmen during an election rally. Mr Gilani said that his son Ali Haider - a candidate for the Pakistan Peoples' Party (PPP) - was seized in the central city of Multan. He accused his political opponents of being behind the attack, which came ahead of Saturday's elections. One person was reportedly killed when the attackers opened fire at the rally. No group has so far claimed responsibility for Thursday's attack.