(CNN) Steve Bannon is expected to surrender Thursday to face New York state charges related to his fundraising effort to build a wall along the southern US border, people familiar with the matter say. The state charges, which have been returned in an indictment, are based on the same conduct Bannon was charged with by federal prosecutors in 2020. Then-President Donald Trump pardoned Bannon on the federal fraud charges related to the alleged scheme as he was leaving office. The Manhattan district attorney's office opened an investigation into Bannon and the crowd-fundraising effort called "We Build The Wall" after the pardon. In recent months, several people close to Bannon were brought before the state grand jury , CNN previously reported.