Ashdown's office said in a press release that the EU Police Mission (EUPM) had conducted an inquiry into the statement Adnan made last month, particularly his allegation that the fuses used in the Madrid attacks were produced in Bosnia and Herzegovina.
Andan also said at a press conference that members of "the white Al-Qaida" were being recruited in Bosnia and Herzegovina and after that they carried out terrorist attacks round the world.
A report Ashdown received from EUPM Commissioner Kevin Carty found that Andan's allegations were unfounded. "It is clear from his report that Mr Andan made these claims without having any firm evidence," the Office of the High Representative said.
Ashdown said that Adnan's comments were of a political nature and that they were damaging to the Ministry of the Interior of Republika Srpska and to Bosnia and Herzegovina.
The High Representative asked Andan to send a letter to Carty by June 6 in which he would retract the comments he had made at the press conference and acknowledge they were unfounded.