A man in the US state of Florida has been sentenced to 70 years jail for recording himself having sex with a one-year-old relative and distributing the footage online in a dark web forum.
In what authorities have referred to as "the most horrible atrocities imaginable", James Lockhart produced a sexually violent four-video series of child sex abuse.
According to the US Attorney's Office, Lockhart displayed signs bearing the forum's name in the videos, as well as his online monikers "Strangewood" and "Hardwood" in order to gain notoriety.
In one message shared by Lockhart on the forum, he said he was "new to the production game" but was "eager to get working and getting better", according to a plea agreement.
In another, he asked for requests.
Other infant victims
He also created other sex abuse videos and images of the child while bragging about sexually abusing another one year old.
7NEWS.com.au has chosen not to report other, graphic messages posted by Lockhart as well as other detail in this story.
The 31-year-old, who pleaded guilty earlier this year, also collected child pornography involving other victims which depicted sadomasochistic and violent conduct.
"This deviant committed the most horrible atrocities imaginable to a one-year-old child," Homeland Security Investigations (HSI) agent Michael Cochran said.
"HSI's national and international partnerships have helped ensure that this predator will never again harm a child."
US authorities were assisted in their investigations by the Queensland Police.
While acknowledging this, a spokesperson for Queensland Police told 7NEWS.com.au that "in the interests of protecting the victim" no further details would be given.
