A judge has ruled that Infowars founder Alex Jones is liable in a lawsuit over his claims the Sandy Hook school shooting was a fabrication.
Jones, who set up the right-wing website Infowars, claimed gun-control advocates and mainstream media fabricated the 2012 mass shooting in which 20 children and six school employees were shot dead at Sandy Hook school in Newtown, Connecticut.
Several parents are suing Jones and Infowars, as well as its parent company, for defamation in both Austin, Texas and in Waterbury, Connecticut.
Connecticut Superior Court Judge Barbara Bellis ruled that Jones had defaulted on the case by refusing to turn over documents she ordered regarding whether his companies profited from publishing the false claim, attorney Chris Mattei said in a statement.
Mr Mattei, whose firm Koskoff, Koskoff & Bieder, represents the victims' families, said: "Mr Jones was given every opportunity to comply but, when he chose instead to withhold evidence for more than two years, the court was left with no choice but to rule as it did today."
"While the families are grateful for the court's ruling, they remain focused on uncovering the truth," he said.
Lawyers for Jones did not immediately reply to a request for comment.
The ruling follows a trio of losses for Jones in Texas on 1 October when a judge presiding over other defamation suits also found that he had failed to comply with court orders to hand over documents.
In a deposition linked to one of the Texas suits, Jones eventually acknowledged the massacre had occurred, though he denied wronging the children's parents.
Damages in the four cases have yet to be determined.