It was the fifth attack on police this month in the southern province , a hot spot of ethnic tension where the Albanian majority have boycotted Serbian institutions and set up their own , which are considered illegal by Belgrade .
<response> It was the fifth attack on police this month in the southern province , a hot spot of ethnic tension where the <misc>Albanian</misc> majority have boycotted <misc>Serbian</misc> institutions and set up their own , which are considered illegal by <location>Belgrade</location> . </response>