Camps are in Bosnia and Serbia, Bulgarian nationals are also involved.

“In Bosnia, they trained with drones and learned how to organise mass riots and how to provoke the police into a violent reaction,” said Moldovan MP Lilian Carp from the ruling pro-European Party of Action and Solidarity and chairman of the parliamentary security committee.

“Our authorities know exactly where the training took place, in which camps and how people got to those locations, how the instructors from the Wagner group got there, what they talked about and what type of training was held.”

In February this year, BIRN visited Radenka, in Serbia, and found burnt pieces of paper, remnants of plastic tarpaulin and torched ground at the location where video and photographs previously showed tents set up last summer.

According to media close to the Serbian government, investigators found drones, VR headsets, Starlink satellite internet equipment and flammable liquids at the site. Neither the government nor the police have made any official comment.

and it probably happens under the protection of local authorities:

In October last year, Bosnia’s security ministry dismissed claims about paramilitary training camps on Bosnian territory, saying: “If such a thing really existed, Moldova would probably have informed us, requested information, warned us or sent a note of protest. We have never officially received a letter from them. When such a problem exists, anywhere in the civilised world, it is solved through interstate police cooperation, not fabricated media headlines that serve exclusively for internal political showdowns in Moldova.”