"On April 5, the head of the village of Mala Pereshchepyna of the Novosanzharsky community informed the police that unknown people had damaged the memorial complex of Khan Kubrat," the statement said.
Police found that unknown people had dug under the concrete base of the complex, and the memorial stele fell.
Police are currently searching for those involved in the damage to the memorial complex.
The issue of entering information into the Unified Register of Pre-trial Investigations under Part 1 of Art. 298 (Illegal conduct search works on the project of archaeological heritage, extermination, destruction or damage to cultural heritage objects) of the Criminal Code of Ukraine is being considered.
The Ministry of Foreign Affairs of the Republic of Bulgaria responded to the incident and condemned the act of vandalism. The agency said it was necessary to find the nocent.
"We expect that the competent Ukrainian institutions will find the perpetrators of this hooliganism and they will have a liability," the Bulgarian Foreign Ministry said.
Khan Kubrat is one of the key historical figures for the Bulgarians. He is considered to be the ruler who united the Bulgarian tribes and founded the so-called Greater Bulgaria in the 7th century.
As it was reported earlier, the Ukrainian Parliament supported the draft law No.4225, the one about the creation of National memorial military cemetery.