The father , in his 70s , and a son , in his 40s , were arrested in Tarragona , in eastern Spain . They say it could be used to make spare parts or enrich uranium . Sanctions prohibit export of certain machinery to Iran . Iranian , three Spaniards face charges and possible prison sentences .
They say it could be used to make spare parts or enrich uranium . Sanctions prohibit export of certain machinery to Iran . Iranian , three Spaniards face charges and possible prison sentences .