HAVANA -

Cuba is defending its financial system as U.S. prosecutors allege that tens of millions of dollars defrauded from Medicare were sent to island bank accounts. 

Johana Tablada is subdirector for U.S. affairs at the Cuban Foreign Ministry. She says Cuba has strict money-laundering controls and works with foreign banks to fight fraud. 

Tablada also says the U.S. embargo prevents Cuba from cooperating with U.S. financial institutions. 

She says "it is not Cuba but the United States that is the world's main country for money laundering." 

A South Florida man was ordered held pending arraignment this week. He is accused of conspiring to wire money from the alleged fraud to Cuba. 

U.S. prosecutors say Cuba is not suspected of involvement. 

Tablada's comments came Wednesday in a statement sent to the AP.