String of attacks in Iraq kills at least 66

photo People inspect the site of a double suicide bomb attack in the Shiite neighborhood of Sadr City, Baghdad.

BAGHDAD - A suicide bomber blew himself up among a crowd of Shiite pilgrims passing through a mainly Sunni neighborhood in Baghdad and another detonated his explosives inside a cafe north of the capital, the deadliest of several attacks across Iraq on Saturday that killed at least 66 people.

The killings, which also included attacks on journalists and anti-extremist Sunni fighters, are part of the deadliest surge in violence to hit Iraq in five years. The accelerating bloodshed is raising fears that the country is falling back into the spiral of violence that brought it to the edge of civil war in the years after the 2003 U.S.-led