Iranian naval forces have seized a foreign-registered ship they said was smuggling fuel in the Arabian Gulf and arrested its crew, local media said Monday.

“The navy of the Islamic Revolutionary Guard Corps has seized a foreign tanker carrying 11 million liters of smuggled fuel,” said Mojtaba Ghahremani, the judiciary chief for Hormozgan province, according to the Tasnim news agency.

It is not known when the vessel was seized, or what flag it sailed under.

In recent months Iran has announced several operations targeting fuel smuggling in the Arabian Gulf, where a large amount of the world’s oil is produced and shipped.

Iran has among the lowest petrol prices worldwide, which can make smuggling to other countries a lucrative business.

In September, Iran said it had seized another foreign vessel carrying 757,000 liters of smuggled fuel in the same area.