The commemoration will start at 1030 hrs on Tuesday.

The mass grave at Tezno near the Slovenian city of Maribor is one of the biggest post-WWII mass graves in Slovenia, containing the remains of people killed by the Yugoslav communist authorities in 1945. It is probably the biggest mass grave of Croats killed during death marches on their way back from Bleiburg, Austria. The grave is an anti-tank trench several kilometres long, which contains the remains of at least 18,000 people, mostly Croatian civilians and soldiers of the Nazi-style Independent State of Croatia (NDH), who in late May 1945 were brought from a camp in Maribor to what today is the Dobrova cemetery and executed there.

Parliament Speaker Boris Sprem recently rejected criticisms that the ruling coalition, having revoked the parliamentary sponsorship of the Bleiburg commemoration, was trying to avoid paying tribute to the victims of death marches at the end of WWII.

"We will pay tribute to the victims of death marches at sites where most of them were killed and we will do that in an appropriate and dignified manner," Sprem told reporters on Saturday evening.

Milanovic has recently stated that there were no victims in Bleiburg, but that most people were killed in Tezno where a large number of young people were killed without a trial. He said that he, President Josipovic and Parliament Speaker Sprem are going to Tezno to pay their tribute to the people killed without a trial.

Two years ago President Josipovic laid a wreath and lit a candle at the monument commemorating people killed in the aftermath of World War II in May 1945 at the Dobrova cemetery in Tezno, expressing hope that his act would put an end to one circle of disputes about Croatia's antifascist past.