Rioting in Kosovo during Belgrade team chief visit

The box was reportedly thrown from a truck parked by the side of the Pristina-Caglavica road.

KPS said that "the person who threw the styrofoam and the owner of the truck would be detained".

According to reports, Borko Stefanovic first spent a short time in Pristina at the U.S. embassy there, and then proceeded to Laplje Selo, where he was to meet with political representatives of local Serbs.

Meanwhile, the radical ethnic Albanian Self-Determination Movement organized a protest against Stefanovic's visit.

Protesters gathered in front of the government in Pristina tried to break through to the yard, but were prevented by police.

Clashes were reported at the scene, with KPS members using tear gas to contol the crowd.

A Beta news agency repoter said he saw "two policemen and one policewoman driven away in an ambulance".

Reports later said that dozens were injuried in the arrest, including demonstrators and members of the KPS.

The protesters hurled bottles filled with red paint and rocks at the building, and broke windows on several government and police vehicles.

Self-Determination Movement member of the Kosovo assembly Glauk Konjufca told reporters they were angry because they "did not wish for those who spread anti-Albanian propaganda and declare Kosovo institutions to be Serb institutions" to visit those institutions.

Trip to Pristina "intelligent move"

Serbian Ministry State Secretary Oliver Ivanovic says that Borko Stefanovic's trip to Pristina on Thursday was "an intelligently planned initiative".

"He broke the ice, and, in any case, it's a very intelligently planned initiative that is supposed to demonstrate Serbia's generosity of spirit in this respect, and our readiness to go there," said the state secretary.

The working visit, he continued, "means Stefanovic will hold meetings that should lead to better mutual understanding", and also provide an opportunity "to meet without mediators in a fairly informal manner".