"According to information I have, two witnesses are in question. I received the information a few days ago, and there can be some more witnesses," Colak was quoted by the Sarajevo-based Dnevni Avaz daily as saying on Wednesday.
Leutar died in late March 1999 of injuries he sustained in the assassination attempt a few weeks before. His car exploded while in motion, and an investigation established that an explosive device was planted under his car.
After an extensive investigation, an indictment was issued against six Bosnian Croats, including Leutar's bodyguard, Zeljko Cosic, who were suspected of being linked to drug smugglers.
Ivan Andabak, a retired Croatian general, was believed to have been at the helm of that gang.
During the first trial, all the indictees were cleared of charges, and after that the Sarajevo cantonal prosecution's office resumed another investigation into the
Contrary to the minister Colak, cantonal prosecutor Branko Sljivar has said that no progress has been made so far in the investigation.
On the other hand, a former head of the UN mission in Bosnia, Jacques Paul Klein was quoted by the Voice of America earlier this week as saying that he personally insisted on a through probe into Leutar's assassination.
When the deputy interior minister of the Bosnian Federation was killed, Klein was the head of the UN mission in Sarajevo. During his term, Klein said that he knew who committed the assassination.
I cannot punish the perpetrators, but there is evidence and information about who saw perpetrators planting the explosive device under the car of the deceased deputy minister Leutar, the American told he VOA earlier this week.