Kabul: Thousands of protesters surrounded a UN compound in the northern Afghan city of Kunduz on Saturday and clashed with police, in a fifth day of deadly demonstrations over the burning of Qurans, police said.

"The protesters are clashing with the police and trying to enter (the UN) compound, but police have stopped them so far," Sarwar Husaini, Kunduz police spokesman, told AFP. City medical sources said one person had been killed.