Reprinted with permission from AlterNet.

The New York Times reports that special counsel Robert Mueller has subpoenaed conspiracy theorist Jerome Corsi.

He was contacted by President Donald Trump for information about former President Barack Obama’s birth certificate during his birther campaign. Corsi currently works with conspiracy theorist Alex Jones at Infowars.

He is connected to former Trump adviser Roger Stone, who investigators appear to consider a “nexus” between Trump’s team and Wikileaks.

Stone has maintained that he didn’t have contact with Wikileaks leader Julian Assange during the 2016 presidential campaign.

A lawyer for Corsi says Corsi “fully intends to comply with the subpoena” and anticipates to be asked about Stone.

(Correct: This article was edited at 4:44 p.m. ET to correct the spelling of Corsi’s first name.)

Chris Sosa is the Senior Editor at AlterNet. His work also appears in Mic, Salon, Care2, Huffington Post and other publications. Follow him on Twitter @ChrisSosa.