At least 28 people were killed and nearly 160 injured on when a suicide bomber blew himself up in the funeral procession of a Shia cleric in the northwestern Pakistani city of Dera Ismail Khan, sparking angry protests which prompted authorities to impose curfew.

The suicide bomber struck the 1,500-strong funeral procession of cleric Sher Zaman, who was killed by unidentified gunmen yesterday and the blast created mayhem throwing bodies up in the air.