SARAJEVO: Bosnia's Missing Persons Institute said that the recent heavy floods revealed seven skeletons, presumably of people killed during the 1992-95 war.

Lejla Cengic from the institute said Thursday that six skeletons were in a mass grave on the banks of the river Bosna, and the seventh was in an individual grave. Four of the skeletons had their hands tied behind their backs.

The Institute says it hopes to identify the skeletons by DNA analysis.

For years, experts have been searching the area of Doboj for the remains of 16 Muslim Bosniaks from a nearby village who were killed in 1992. Four had been found, including one swept down the river to Sremska Mitrovica, Serbia.

Workers fixing power lines after the flooding noticed human bones, and experts were called in.

Also on Thursday, police arrested three Bosnian Serb former soldiers on suspicion of war crimes against Muslims following the discovery last year of what is potentially the largest mass grave of Bosnian conflict.

The state prosecutor said Mitar Vlasenko, 59, Rade Vlasenko, 54, and Drago Koncar, 53, were arrested in the village of Kozarac near the northwestern town of Prijedor. Police were searching more locations for evidence.

Thousands of Bosniaks and Croats perished in Bosnian Serb detention camps in Prijedor as part of bid to drive non-Serbs from the land. Around 100,000 people died in the war, the large majority of them Muslim Bosniaks.

"The men were part of the Serb Republic Army and are suspected of killing seven Bosniaks in the area of Kozarac," the prosecutor's office said in a statement.