Deadly attack targets Pakistan polio drive

Following Tuesday's attack in Karachi, the polio workers' association of Sindh said it was halting operations across the province. Men on motorbikes opened fire on polio teams in two separate incidents in the Qayyumabad neighbourhood in the east of Karachi, Pakistan's biggest city. Al Jazeera's Osama Bin Javaid has the details from the country's biggest city, Karachi.