The notorious drug dealer Hikmet Hajrovic from Novi Pazar (southwestern Serbia) and another 20 persons have been arrested in a police operation carried out across Serbia, and several dozen kilograms of heroin were found in their possession, Serbian Police Director Milorad Veljovic told Tanjug Friday.

Veljovic specified that the Belgrade Criminal Police carried out the operation in the Serbian capital, as well as Kraljevo (central Serbia) and Novi Pazar, in coordination with the Organized Crime Prosecutor's Office and special units of the Serbian Interior Ministry.

This is one of the strongest criminal groups that has for years been involved in dealing, procuring, and distributing narcotics, primarily heroin, Veljovic stressed.