Some 50 bodies have been discovered outside a city south of Baghdad, many of them blindfolded and with their hands bound.
Military spokesman Brigadier General Saad Maan Ibrahim said the bodies were discovered today in an agricultural area outside the city of Hillah.
It is a predominantly Shiite city about 95 kilometres (60 miles) south of Baghdad.
Mr Ibrahim said an investigation is under way to determine the identities of the dead as well as the circumstances of the killings.
The discovery of bullet-riddled bodies was common during the worst days of Iraq’s sectarian bloodletting in 2006 and 2007.