According to the Ministry of Defence, the ICG operation dismantled a network involved in the illicit transfer of large quantities of oil and oil-based cargo. This incident has brought renewed attention to an earlier incident in which Iranian authorities seized an oil tanker in international waters. According to the Ministry of Defence, the ICG operation dismantled a network involved in the illicit transfer of large quantities of oil and oil-based cargo. This incident has brought renewed attention to an earlier incident in which Iranian authorities seized an oil tanker in international waters.