The trial chamber gave the prosecution until June 2 to submit a joint indictment against the three journalists.
Seselj, publisher of the Hrvatsko Slovo weekly, and its former editors in chief, Margetic and Krizic, are charged with publishing in December 2004 the testimony of Stjepan Mesic who testified as a protected witness in the trial of senior Bosnian Croat military officer Tihomir Blaskic in 1998.
Jovic is charged with publishing the same transcript in the Slobodna Dalmacija daily in December 2000, while Margetic is additionally charged with publishing it in the Novo Hrvatsko Slovo weekly.
The trial chamber rejected the prosecution's proposal that all four journalists should be tried together, saying that Seselj, Margetic and Krizic were part of the "same transaction" while Jovic worked with another newspaper and committed the offence four years earlier.
The indictment against Seselj and Margetic was issued on 25 January 2005, while separate indictments against Krizic and Jovic were issued on 9 September 2005. At their initial appearance before the court, all four accused pleaded not guilty.