A senior U.S. Justice Department official sent a letter to a lawyer for relatives of victims killed in the Sandy Hook Elementary School shooting, asking pointed questions about a retired FBI agent’s involvement in a defamation lawsuit that led to a $1.4 billion judgment against conspiracy theorist Alex Jones. That then led to years of abuse from people who believed the shooting was a hoax, he has said. Martin sends lawyer letter asking about retired agentIn a Sept. 15 letter to Christopher Mattei, a lawyer who represents Sandy Hook families, Martin suggested he was scrutinizing Aldenberg’s role in the lawsuit. Relatives of the shooting victims testified that they were subjected to violent threats, in-person harassment and abusive comments on social media because of Jones. The Sandy Hook plaintiffs are now trying to liquidate Infowars’ assets in state court proceedings in Texas.