Investigating magistrate Georgi Iliev said the Burgas bus bombing, which killed seven and wounded 35 in August 2012, will be re-enacted to provide answers to certain open questions.
Bulgarian National Radio said Iliev explained that the bus bombing would be reenacted at a military training ground near the southwestern town of Ihtiman.
He said preparations for the experimental reenactment were underway, and the Interior Ministry had been tasked with preparing a bomb similar to the one used in the terror attack at Sarafovo airport.
Iliev said the reenactment of the bus bombing was designed to provide answers to a number of questions that had not been cleared up.
Burgas became a target for a terrorist attack on July 18, 2012. The bus explosion killed five Israeli tourists, the Bulgarian bus driver, and the alleged perpetrator of the attack.
On February 5, 2013, the then Interior Minister, Tsvetan Tsvetanov, said all the existing evidence pointing to a "reasonable assumption" that Hezbollah's military wing was to blame for the blast.
In two high-profile war crimes trials currently ongoing in Pristina, a series of witnesses have retracted previous statements alleging abuse at Kosovo Liberation Army detention centres.