The UN joined the row over Iraqis killed by private American security firms today and war said individuals could face war crimes charges.

Two Iraqi women shot dead by private US security guards were buried today as weeping mourners called for justice.

Guards working for an Australian-owned security company fired on a white Oldsmobile in central Baghdad, killing two Christian women then speeding away - the latest seemingly unprovoked attack on civilians by the heavily armed and some say trigger-happy teams.