President Asif Ali Zardari has condemned the blast near a police van in Swat.In a statement today, he paid tribute to the martyred police officer and expressed condolences to the bereaved families.The President said terrorist elements are enemies not only of the country and the nation but also of humanity.He expressed the resolve to continue efforts for complete elimination of terrorism from the country.The President also prayed for the speedy recovery of those injured in the explosion.Source: Radio Pakistan