Rigel said Omora Harvey "Big Mo" Gibson was arrested Wednesday in Chicago by the U.S. Marshals Service Fugitive Task Force.
Gibson has been charged with murder in Lamar County. Lamar County has asked for Gibson's return to Mississippi.
Rigel said Gibson has been charged in the July 14, 2010, shooting death of 26-year-old Wayne Kennedy Davis, whose body was found outside an apartment building.