Marcel Lehel Lazar, a Romanian citizen and former taxi driver also known by the hacker moniker “Guccifer,” was indicted by a US federal grand jury on Thursday on charges of wire fraud, unauthorized access to a protected computer, aggravated identity theft, cyberstalking, and obstruction of justice.

The indictment stems from charges that Lazar, acting as Guccifer, posted stolen data from e-mail and social media accounts of high-profile victims, including a family member of two former US presidents, a former US cabinet member, a former member of the US joint chiefs of staff, and a former presidential advisor, the US Justice Department said on Thursday.

“After gaining unauthorized access to their e-mail and social media accounts, Lazar publicly released his victims’ private e-mail correspondence, medical and financial information, and personal photographs,” the Justice Department explained.

Guccifer rose to fame when, in February 2013, he claimed responsibility for hacking into the e-mail accounts of President George W. Bush’s family members and then posting some revealing and humorous self-portraits the hacker claimed were painted by the former president. One such self-portrait shows Bush from the lower-back up in the shower, while the other shows his thighs, legs, and feet partially submerged in a bath tub.

That same year, Guccifer also “distributed emotional e-mails 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," reports Reuters.

While the indictment does not mention by name the identities of the individuals whose private information is claimed to have been hacked, “Victim 1,” a "family member of two former US presidents who was the true owner of an AOL account known to the grand jury,” is believed to be a member of the Bush family.

Specifically, according to The Smoking Gun's previous reporting, Victim 1 appears to be the daughter of George H. W. Bush and sister of former President George W. Bush, Dorothy Bush Koch.

Guccifer is believed to have intercepted the images after George W. Bush had e-mailed them to his sister. The hack opens a window into some of the extended family's most personal and intimate moments, including several members planning the funeral of the older former president when he was hospitalized late last year.

Lazar is currently serving time in Romanian jail after being sentenced last week to as many as seven years in prison for hacking crimes against Romanian citizens. Lazar’s attacks on US citizens were not mentioned in Romanian court and an unnamed general at the Romanian general prosecutor’s office said his office had no knowledge of US requests for Lazar’s extradition, reports Reuters.