Assailants hurled hand grenades and shot at Serbian police Thursday in Serbia's restive Kosovo province, and thousands of ethnic Albanian students held protest marches.
No one was injured in two separate attacks Thursday afternoon reported by state-run radio. First, a police car was fired upon near the town of Podujevo, 18 miles north of the province's capital of Pristina. Shortly afterward, two hand grenades exploded near the police station there.
Meanwhile, 10,000 ethnic Albanians marched in Pristina for the second evening in a row Thursday, demanding the right to study in Albanian-language universities that have been banned by the Serbian government.
Serbia rules its southern province of Kosovo with heavy military and police power. More than 90 percent of the population is made up of ethnic Albanians who do not recognize Serbian institutions and want to see Kosovo gain independence.
Kosovo has simmered with violence since 1989, when then-Serbian President Slobodan Milosevic abolished its broad autonomy. But fears of larger conflicts have increased in the past 18 months after a wave of terrorist attacks killed more than 20 people.