Ball bearing bomb - false flag weapon of choice in Iraq?

[TonyGosling]

Thought Crime News - - - Highly likely there are no witnesses nor evidence left to substantiate this bomb as being exploded by a suicide bomber?
No source but 'police'.

http://news.google.co.uk/news?ncl=1135626179

Suicide bomber kills 40 in Iraq - police
By Habib al-Zubaidi

HILLA, Iraq, Feb 24 (Reuters) - A suicide bomber detonated a vest packed with metal ball bearings in a refreshment tent full of Iraqi pilgrims heading to a Shi'ite festival on Sunday, killing 40 people and wounding 60, police said.

Women and children were among the victims in the bombing in the town of Iskandariya, 40 km (25 miles) south of Baghdad.

The attack was one of the deadliest in Iraq this year and happened despite a major tightening of security for the annual Arbain festival in the southern holy city of Kerbala. It is one of Shi'ite Islam's holiest events.

Most of the casualties were hit by the ball bearings, said a doctor at a hospital in the city of Hilla, where many of the wounded were taken. A wounded woman there said the attack happened in a tent where pilgrims were offered refreshments.

"When we reached the area people invited us into a tent to take some rest and have some food. When we entered, there was a huge ball of fire and we saw people lying on the ground," said Um A'amr, who was being treated for multiple wounds..................
http://www.reuters.com/article/middleeastCrisis/idUSYAT470674