A car bomb explosion tore through a crowd of Shiite pilgrims returning home today from a religious commemoration, killing at least 20 and reinforcing fears of renewed sectarian violence, according to Iraqi officials.
The blast erupted late in the afternoon in the town of Musayyib, about 60 kilometres south of the Iraqi capital. It targeted worshippers returning from the Shiite holy city of Karbala following the climax of the religious commemoration known as Arbaeen.
Children were among the 20 people confirmed killed, according to a police official. He said at least 50 people were wounded.
The bomb went off in the middle of a gathering of pilgrims changing buses coming from Karbala on their way to other destinations in the country, according to police.
"The explosion shook the whole block and smashed the windows of my house," said teacher Ibrahim Mohammed, who lives nearby. "I ran to the scene of the explosion only to find charred bodies and burning cars. There were women screaming and searching for their missing children."
A hospital official confirmed the casualty toll. The officials spoke on condition of anonymity because they were not authorised to release the information to reporters.
The day marked the height of Arbaeen, when hundreds of thousands of Shiite pilgrims converged on Karbala to mark the passing of 40 days after the anniversary of the seventh century martyrdom of the revered Shiite saint Imam Hussein, the grandson of the Prophet Muhammad.
Shiite pilgrims are one of the favourite targets for Sunni insurgents during Shiite religious events.
Iraqi authorities typically tighten security in Karbala and along routes used by pilgrims, but security forces acknowledge they are unable to prevent all attacks.