Hundreds of Muslims stormed a Christian neighborhood in Gojra city on Saturday, burning dozens of houses.
Six Christians were burned to death and two died of gunshots. The violence was prompted by allegations that some Christians had desecrated a Quran.
Bishop Sadiq Daniel says the Christians' want to register their anger and concern peacefully. He said Monday that the government must "bring all perpetrators of the crime to justice." A spokesman for Pakistan's president said a judicial panel would probe the incident.