Fahrudin Radoncic, a powerful Bosnian politician and owner of the country's largest daily newspaper, was arrested Monday, the state prosecutor said, on charges related to the trial of regional drug lord.
Radoncic, 58, leader of the Alliance for a Better Future of Bosnia and Herzegovina, owner of the Dnevni Avaz newspaper and member of the Bosnian parliament, is suspected of obstructing justice, the prosecutor's office said in a statement.
It added that several locations were being searched and that no other information would be disclosed in the interest of the investigation.
Bosnian media reported that police raided the offices of Dnevni Avaz in Sarajevo.
Radoncic said earlier this month that he was called to testify in April in the trial of an alleged drug trade boss, Kosovo Albanian Naser Kelmendi.
Bosnian media implicated Radoncic, a former Bosnian minister for security, of close ties with Kelmendi, who is being tried in the Kosovo capital Pristina under murder and drug-trafficking charges.
Radoncic, often described as a "tycoon" and "media mogul," denied allegations of links with Kelmendi, but an official of his party was arrested on suspicion that he was trying to influence a Bosnian witness in the Kelmendi trial.
The official, Bakir Dautbasic, allegedly asked the witness to leave Radoncic's name out of her deposition.