ISLAMABAD – Former president Asif Ali Zardari on Wednesday demanded judicial probe into the firing incident on peacefully protesting employees of the Pakistan International Airlines (PIA) in Karachi. While condemning the firing incident on the protesting PIA workers, he said that use of force against the employees was strongly condemnable. In a statement, Zardari asked the government to strictly adhere to democratic norms instead of opting for any other option to deal with such level of protests.