Press official note from the organization:
http://www.ajedrezsantaisabel.com/Notaprensaivanov.pdf
Short translation: After the round 4, he was checked in a room, specially the shoes, and didn´t find anything on them. In the next round, he was playing with coat and scarf on in a warm room and also some players noticed some kind of shape on his back.After the game, one angry player catched him and, while holding him, he asked him: what are you hiding on the back? He said something in bulgarian, but manage to scape and run away from the playing area. The player said that he touched something similar to a mp3 player.
The next day, before the round, he was again ask for a search. In a next by room, the director of the tournament -which is as well a retired policeman- searched on him with clothes on, but when he was around the chest he found something close to his left-armpit, but in this moment, Ivanov just retreated back quickly and one button of his shirt just opened up and the director manage to see some kind of tape crosing around his chest. Ivanov refused to clarify what was that and refused to continue with the search. Then he was eject from the tournament.
The guy told the organizator that he was very low on money and he gave him 50€ as a charity action.
I found here a complete translation (better than mine by far):
https://www.facebook.com/groups/141553385913043/permalink/575407752527602/
Finalmente!!!
It was looking as if the Tournament organizers just didn´t have anything to do with Ivanov (like if they didn´t want to associate his tournament with cheating), but in the end they decide to talk.
Isn't borislav a combination between borris gelfand and slav defense?
As things going on, more like a cross between a masochist and a weasel.