"Since these are extensive materials that need to be examined and analysed, the Prosecutor's Office will decide on further steps after the completion of the analysis," the Office said in a statement.
It did not give any details of the documents or name possible suspects, saying that it was a criminal inquiry and that all information pertaining to it was confidential.
According to Croatian media reports, the materials sent to the Chief Public Prosecutor's Office contain evidence against Tomislav Mercep, who in 1991 served as municipal secretary of defence in Vukovar and then as assistant minister of the interior and who commanded a unit of police reservists.
The Jutarnji List daily said that based on the evidence gathered by Hague tribunal prosecutors, Mercep could be tried for murders of Serb civilians in Vukovar in 1991, for war crimes committed in Pakracka Poljana (a village outside Pakrac, about 100 kilometres east of Zagreb) and for the detention and torture of civilians in the Zagreb Trade Fair Centre, from where his unit took them under his command to Pakracka Poljana.
"I have no reason to respond because it's such nonsense. There's not a single fact or argument in there," Mercep told Croatian Radio.