Tanzania said Thursday it is investigating US accusations it reflagged Iranian oil tankers to help Tehran evade US and EU sanctions.
"If we confirm that there are Iranian ships flying Tanzania's flag, we are going to obliterate the registration," Foreign Minister Bernard Membe told reporters.
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Both the European Union and the United States have imposed embargos on Iranian oil exports to pressure Tehran over its contested nuclear drive.
Tanzania said it has asked the US and EU to support the investigations, after Howard Berman, a member of the US House Committee on Foreign Affairs, said at least six Iranian tankers had switched flags to skirt sanctions.
On Wednesday, neighbouring Kenya said it had cancelled an oil import deal with Iran after international pressure.