The officers seized 14,828 litres of oil in the operation. of this amount, 7,848 litres is ben zene. The rest is diesel omens say Mr Suthep, a resident Tha Muang district, of Kanchanaburi's transporting oil across the admitted border about 40 times over the past three months. He did not say who ordered the shipments. The oil smuggling caused heavy losses of state revenue, officers said. Excise department officer Chatchai Na Mahachai yesterday took Mr Suthep to Muang police station to face charges The officer asked Pol Lt Chairat Jan anan, a police investigator, to press charges of importing untaxed con signments and possessing or having untaxed goods with intent to sell An investigation is underway to find other suspects involved, amid claims the shipments could be part of an oil smuggling network.