Eleven Russian workers have been abducted in the Iraqi capital Baghdad, Aljazeera TV reported.
An official from the Russian energy service company, Interenergoservice, announced that two Iraqi company guards may have also been killed during the confrontation with the armed captors.
A Russian engineer in Iraq said that the eleven abducted worked at power plants.
Two Czech state television journalists and one radio correspondent are missing in Iraq and may have been kidnapped. They are not heard of since early Monday.
Also on Monday, it was reported that seven US contractors working for a Halliburton subsidiary have gone missing in Iraq following an attack by Iraqi resistance fighters on their convoy near Baghdad international airport.
Meanwhile seven Chinese hostages captured in Iraq have been released.