After Haideri's killing, angry protesters set ablaze two vehicles, including a bus, blocked roads in the Nagan Chowrangi area of Karachi, fired in the air and pelted stones.

Jamaat Ahl-e-Sunat activists also stoned vehicles in Hyderabad and Sukkur towns.

The Pakistan Ulema Council, while condemning Haideri's murder, announced three days of mourning. The council's information secretary, Nasser-u-Din described the killing as a conspiracy to incite sectarian violence in the country.

Muttahida Quami Movement leader Altaf Hussain, in a statement from London, strongly denounced Haideri's murder and termed it a bid to disrupt religious harmony in Sindh.