Detectives are investigating allegations of slavery, servitude and forced labour in relation to one of the men, while claims of kidnap, false imprisonment and assault are being probed in connection with the second alleged victim.
Three AES executives who had already left the country for routine career changes two citizens of the U.K., one from New Zealand were placed under investigation in connection with the tax probe.
The government is also probing Citigroup in connection with manipulating foreign exchange markets and other offenses.
Christine Lagarde, the chief of the International Monetary Fund, was placed under official investigation Wednesday in connection with a French corruption probe that dates back to her days as France's finance minister.
But in a statement on Sunday, a spokesman for Trump's legal team said both diGenova and his wife, Victoria Toensing, who is also a lawyer, would not be working on the Russia probe because clients they are representing in connection with the investigation posed conflicts of interest.
Presidential pardons, or at least the possibility of them, are back in the news: This week, The Post's Ashley Parker reported that President Trump "has asked his advisers about his power to pardon aides, family members and even himself in connection with the probe" as Robert Mueller's Russia investigation hangs over his administration like a specter.
The boy, from County Antrim in Northern Ireland, was among four people to be detained in connection with the probe.
Mr Mack was eventually interviewed in connection with the probe, after Congress had started to take an interest.
She has been interviewed by the Federal Bureau of Investigation in connection with its probe into Clinton's use of a private email account.
The former Prime Minister Sir Edward Heath, who died in 2005, and the late Home Secretary Leon Brittan have also been named in connection with the probe.
