Demurenko’s investigation “indicated that the Serbs could not have fired the shell,” Karadzic said.
Serb positions “either were not suitable for mortar use or that there were no traces of mortar use,” he added, reading a summary of an earlier statement by Demurenko.
However, previous trials at the tribunal — including one at which Demurenko testified for the defense — have concluded that Serb forces fired the mortars and convicted Serb officers of responsibility.
Karadzic boycotted the start of his trial in October 2009 saying he had not been given enough time to prepare. The first witness did not testify until April 2010 and prosecutors rested their case on May 25 this year.
Just over a month later, judges acquitted Karadzic of one count of genocide, saying prosecutors had not presented enough evidence to establish that a campaign of murder and persecution early in the Bosnian War amounted to genocide. Prosecutors have appealed the acquittal.
Karadzic still faces 10 more charges, including one genocide count relating to the Srebrenica massacre.
His wartime military chief, Gen. Ratko Mladic, is also on trial in The Hague, facing the same charges. Both men face a maximum sentence of life imprisonment if convicted.
But Karadzic insisted Muslims and Croats were to blame for the conflict in Bosnia.
“It is a terrible misconception and great injustice, this portrayal off the Serbs as the ones who started the war,” he said.