The police commissioner in the northeastern town of Tuzla, Ivica Divkovic, told local media that both Ajanovic and his family had been placed under police protection after police had learned of the existence of "groups and individuals who might target Ajanovic," some of whom are "highly skilled in handling explosives."
Ajanovic's apartment in Tuzla has been placed under police surveillance, and all police agencies in the country, the Intelligence and Security Service (OSA) and the Office of the Chief Public Prosecutor have been alerted.
Ajanovic's party associate, lawyer Faruk Balijagic, has said there is information about a group of three contract killers from Serbia allegedly hired to assassinate Ajanovic.
Ajanovic is the leader of a comparatively small populist party called the Bosnian Party and a member of the lower house of parliament. He is known for his sharp criticism of people whose political views differ from his.
Opinion polls show that Ajanovic has almost no chance of winning the state presidency post.