BAGHDAD -- A suicide bomber blew himself up among Shiite Muslim pilgrims at a crowded rest stop yesterday, part of an eruption of sectarian violence that killed at least 43 people, injured 148 and tarnished one of Shiite Islam's holiest holidays.
The bloodshed will put pressure on a truce first declared by a powerful Shiite militia in August. Anti-American cleric Muqtada al-Sadr renewed the cease-fire Friday for six more months in a move U.S. and Iraqi officials hope will reinforce recent security gains. But patience with the cease-fire is wearing thin among al-Sadr's followers, who complain their opponents are using it to target them.
The bombing was one of at least three attacks yesterday on the throngs of Shiites who were walking to the southern shrine city of Karbala to commemorate the religious holiday of Arbaeen. The weeklong pilgrimage, which culminates Thursday, marks the end of 40 days of mourning after the anniversary of the seventh-century martyrdom of Imam Hussein, a grandson of the prophet Muhammad and the spiritual linchpin of the Shiite faith.
Such pilgrimages were banned under Saddam Hussein's Sunni regime. Since the late dictator was toppled in 2003, they have become an expression of the dominance of Iraq's Shiite majority - and a frequent target for Sunni insurgents.
More than 200 people were killed last year in repeated attacks as the flag-carrying throngs made their way to Karbala. Encouraged by the recent drop in violence, millions are expected to converge in the holy city this year, many of them walking more than 100 miles to get there.
Residents along the route set up tents offering the pilgrims food, water and a place to rest. It was at one of these so-called comfort stations, erected along a highway between the towns of Iskandariyah and Musayyib, south of Baghdad, that the suicide attacker struck yesterday.
Iraqi security officials and witnesses said a man with explosives hidden under a black leather jacket mingled among the pilgrims and blew himself up. At least 40 people were killed and 105 wounded, said Dr. Ahmed Ajrish, an official at the Babil province health directorate.
Fadil Talib, a civil servant, was in the crowd when the explosion happened.
"All I remember is a loud roar of, `God is great,' followed by a loud blast," Talib said from a hospital bed in nearby Hillah. "The pressure was so intense that all the sounds were muted. I saw flesh fluttering like feathers in the air. ... I fainted and didn't come to until here in the hospital."
Hours after the blast, ambulances continued to arrive at three regional hospitals with the dead and wounded. Staff battled to cope with the flood of casualties.
Talib lay on his side, squeezing a nurse's hand as a doctor stitched a gash in the back of his head. The hospital was running out of anesthetic and other supplies, the doctor said.
Earlier yesterday, police said a roadside bomb exploded near pilgrims walking along a highway through the southern Baghdad district of Dora, where fighting erupted between the mostly Sunni Arab residents and Shiite militiamen accompanying the procession.
Half an hour later, suspected Sunni assailants tossed grenades at the pilgrims from a bridge spanning the highway, police said.
The violence in Dora left at least three civilians dead and 43 injured, most of them pilgrims, according to Iraqi security and hospital officials. Three members of the Shiite-dominated national police force were among the wounded, they said.
The U.S. military did not confirm the earlier roadside bombing but put the casualty toll from the later grenade attack at one civilian killed and 17 injured. An Iraqi soldier was lightly wounded while responding to the situation, the military said in a statement. It made no mention of a bomb or sectarian clashes.
Such discrepancies are common in the immediate aftermath of attacks, and it was not possible to reconcile the accounts immediately.
To protect pilgrims from further violence, the U.S. military said, Iraqi security forces were increasing the number of checkpoints and joint patrols with the Americans along the route to Karbala. Vehicle traffic is also being restricted in some areas and observation posts have been set up, the statement said.
Alexandra Zavis writes for the Los Angeles Times.