Iran has lodged a formal protest over another incident involving British troops near its consulate in the Iraqi city of Basra.
The Foreign Minister reportedly wrote a letter saying soldiers surrounded the consulate on Thursday and fired into the air.
The letter – sent to the British embassy in Tehran – called on Britain to prevent a repeat of this and called for its forces to respect the laws protecting diplomatic places.
The Iranian Ambassador on Thursday said the troops actually entered the Consulate for ten minutes.
The British military denies the accusations. It is reported as saying its soldiers never left their vehicles but instead came under fire themselves from the consulate.