Croatian national Robert Matanic, suspected to be involved in several murders in Bulgaria, has been extradited to Bulgaria from Serbia, reports in Bulgarian media claimed on Sunday.
Matanic is thought by Bulgarian investigators to be the leader of the assassination squad that has allegedly executed several leading Bulgarian underworld bosses in the past years, including Milcho "Baj Mile" Bonev in 2004.
The Croatian has been in prison in Serbia since 2005, when he was arrested on suspicions of smuggling weapons and possession of firearms.
He is also thought to have been a close associate of the Serbian Zemun crime clan, which orchestrated and carried out the assassination Serbian PM Zoran Djindjic
Matanic has also been arrested repeatedly in his native Croatia on charges of illegal possession of firearms and blackmail.