The 2004 Iranian seizure Arrest of Royal Navy personnel took place Process_start in the Shatt al-Arab ( Arvand Rud in Persian ) waterway on 21 June .

The British servicemen were seized Arrest while training Education_teaching Iraqi river patrol personnel after Iran said Statement they had strayed Self_motion to the Iranian side of the waterway .

The Royal Navy boats were operating Control close to the northern coast of the Persian Gulf in the mouth of the Shatt al-Arab waterway which divides southern Iran and Iraq .