ISLAMABAD: Pakistan Awami Tehreek (PAT) chief Tahir-ul-Qadri said on Sunday that the ruling Sharif brothers ordered the brutal handling of protestors by police while Pakistan Tehreek-e-Insaf (PTI) chief Imran Khan vowed to register the F.I.R of Islamabad massacre against Interior Minister Chaudhry Nisar and Prime Minister Nawaz Sharif, ARY News reported.