Pakistani authorities say they have arrested the mastermind of a sectarian bombing that killed 89 people in the city of Quetta Saturday. In total, officials say they killed four people and rounded up seven others accused of killing Shiite Muslims during an operation on the city’s outskirts today. Thousands of Shiites had protested across Pakistan Monday calling for government protection as families of the bombing victims refused to bury their dead until authorities took action against those responsible. Members of the Pakistani Interfaith League rallied in the capital Islamabad.

Sajid Ishaq Sindhu: “Today, we are not gathered on the basis of religion, but we are gathered on the basis of humanity, because we believe that we are all human beings first, and then we are Muslims, Christians, Hindu and whatever. And today we have Christians, we have bishops here, we have pastors, we have Muslims, friends here, we have Hindus and Sikhs. It is a symbol of our unity. It’s a symbol that people of Pakistan belong to one family.”