A Romanian taxi driver, who is already in jail in Romania for hacking, is also wanted in the US following a grand jury indictment.
Marcel Lazar Lehel, who is believed to be the hacker Guccifer, has been jailed for seven years in Romania for hacking crimes but it appears he is now wanted in the US.
The Department of Justice said on Thursday that a grand jury had indicted him on charges of wire fraud, unauthorized access to a protected computer, aggravated identity theft, cyberstalking and obstruction of justice.
Department of Justice spokesman Peter Carr declined comment when asked whether the United States would seek to extradite Lazar to the United States for trial.
Guccifer claimed responsibility for hacking into George Bush family emails and posted artwork by the former president, including self-portraits in the bath.
The same year, the hacker distributed emotional emails sent to former US Secretary of State Colin Powell from European Parliament member Corina Cretu, a Romanian, prompting Powell to deny that they had an affair.