Dragomir Obradovic

Nikola Koprivica, alias Nidza, pleaded not guilty at the Bosnian state court on Tuesday to the charge that he committed a crime against humanity in the village of Novoseoci in September 1992.

"I didn't do it, nor was I there at all," the defendant told the plea hearing.

"Twelve fathers and 13 sons were killed" in the attack on the village of Novoseoci in September 1992, the prosecutor said as the trial of nine Bosnian Serbs began at the Bosnian state court in Sarajevo on Friday.

The Bosnian state prosecution on Friday charged nine people with involvement in a deadly attack on Novoseoci, a village in the Sokolac municipality, on September 21-22, 1992, when 45 Bosniak civilians were killed.