"The security situation is extremely risky due to the unilateral, illegal, illegitimate decisions of the Pristina administration, and first of all, let's call it by our name ... the occupation of the north of Kosovo and Metohija by the Albanian administration from Pristina," TASS quoted him as saying.

Serbian President Aleksandar Vučić said earlier that the NATO mission in the partially recognized Republic of Kosovo (KFOR) did not protect the Kosovo Serbs contrary to these guarantees.

The head of state expressed concern that the situation in Kosovo could develop in a very bad direction.

NATO Secretary General Jens Stoltenberg said that the alliance will send an additional 700 troops to partially recognized Kosovo and, in addition, prepare another battalion for dispatch if necessary.

On May 30, Serbs held a demonstration in Belgrade against support for Kosovo.