ISLAMABAD- Pakistan Tehreek-e-Insaf (PTI) chairman Imran Khan vowed that Nawaz Sharif, Shahbaz Sharif and Chaudhry Nisar Ali Khan would not be spared. He said that protesters were not prepared for shameful attack by the government yesterday. He said that PTI was now ready for the assault and would not leave without the resignations of ‘Sharifs’. Khan assured his workers that FIRs would be registered against the ‘Sharif brothers’ and Interior Minister for murder charges. The PTI chief vowed to fight till his last breathe. He also announced to stage sit-in outside the PM House. He accused the government of kidnapping his party's coordinator. He paid tributes to his party members who stood firm despite intense shelling.