The pipeline bombing came a day after three US civilian contractors working for the US’ Kellogg Brown & Root (KBR) were injured when a bomb exploded at an oil compound.

A senior Iraqi policeman, in charge of security for oil installations in the northern city of Mosul, was shot dead on 22 November. Abdel Salam Qanbar was killed on leaving a mosque in the city, police general Khaled Fathi Jassim told AFP.

Qanbar was appointed to his post by Mosul’s chief of police, Mohammed Barhawi, in co-ordination with the US-led coalition.