Fiji police are reported to be continuing to piece together information linking their former commissioner, Col Isikia Savua, as a major player in the coup of May 2000.
Radio FM-96 quotes state lawyers as saying there are gaps in the evidence against Col Savua.
But they are hoping that the contents of a controversial secret report, which cleared him of involvement in the coup, will help them make inroads into the investigations.
The report is now with the acting police commissioner, Moses Driver.
Meanwhile, Radio FM-96 says the vice president, Ratu Jope Seniloli, is likely to be charged with coup related offences.
This follows the arrest of the deputy speaker of parliament, Ratu Rakuita Vakalalabure, who has been charged with taking an illegal oath to commit a capital offence for being sworn in as attorney general in George Speight's failed administration.
He has also been charged with engaging in seditious enterprise.
Ratu Jope was sworn in as president hours after the coup when Ratu Sir Kamisese Mara was still in office and proceeded to swear in Ratu Rakuita and other members of the failed Speight administration.