![Iraqi Vice President Tariq al-Hashemi](http://t2.gstatic.com/images?q=tbn:pUJCDRYL2iYqYM:http://www.independent.co.uk/multimedia/archive/00263/pg-24-vice-pres-ap_263996s.jpg)
The corpses of at least three of the six Sunni Muslim detainees who died while in Iraqi government custody earlier this month showed signs of torture, their families said Thursday as they vowed revenge at emotionally charged funerals.
Iraqi authorities announced an investigation into the suffocation deaths of six men who were being transported on May 12 in a poorly ventilated truck en route to appear before an investigative committee in Baghdad. The families said they were informed the men died in a "shipping container."