The newspaper quoted Garaplija's attorney Faruk Balijagic as saying this was a precedent, as a testimony subpoena was issued for the first time at the request of the defence.
Karadzic, who is currently presenting his defence before the Hague-based court, already asked Garaplija to testify to explain the role the Seve paramilitary unit had in Bosnia and Herzegovina (BiH) during the 1990s war. The unit was presumably under the control of the then Bosniak political leadership.
It is also speculated that the unit was involved in an attempt to assassinate former Army of BiH Chief Of Staff Sefer Halilovic after his conflict with the state leadership as well as in the killing of a group of former Yugoslav army prisoners of war in Sarajevo in 1992.
Karadzic argues that the existence of the Seve unit proves that Bosnian authorities were responsible for various crimes.
As a security service operative, Garaplija was tasked with investigating the unit's role but the investigation was never wrapped up and the case did not end up in court.
Garaplija talked about what he had found out with the Hague tribunal's investigators in 2000 but refused to testify in Karadzic's favour.
His attorney said he could not testify for the defence, as that would be a conflict of interest, since he had been collecting evidence on war crimes in which Karadzic was also involved.