CHICAGO (Reuters) - An Illinois man charged with kidnapping a missing Chinese scholar has been indicted on the same charge by a federal grand jury, authorities said, in a case that has been closely watched in China. Brendt Christensen, 28, arrested in Champaign, Illinois, was indicted for the June 9 kidnapping of Yingying Zhang, 26, after he was previously arrested and charged, the U.S. Attorney's Office for the Central District of Illinois said in a statement late Wednesday.