In Pakistan, unidentified gunmen today shot dead a mother and her daughter who were part of a polio vaccination team in Quetta, the capital of troubled Balochistan province. <br/><br/>Dawn reported, quoting police sources, the gunmen opened fire on the polio team in the Shalkot area, killing the two women in what law enforcers believe is a targeted attack. Police said the attackers escaped unhurt from the site of the attack.<br/><br/>Earlier today, two policemen were shot dead in a targeted attack in the Zarghoon Road area in Quetta. Polio teams have been the target of militants after the Taliban spread rumours that the vaccination drives were a front for espionage or a conspiracy to sterilise Muslims.