4 killed in Afghanistan amid outrage over Quran burning Intelligence official: Protesters try to burn down the U.N. office in Kunduz Four civilians are killed and 50 people are injured in Kunduz, a health official says Police: At least 15 are injured in Laghman protests Kabul, Afghanistan (CNN) -- Hundreds of protesters took to the streets Saturday across Afghanistan, the fifth day of demonstrations over the burning of Qurans at a U.S. base, officials said. Four civilians were killed and 50 injured Saturday amid protests near the U.N. office in Kunduz, said Saad Mokhtar, head of the city's health department. Twelve police officers were among the wounded. Gulam Mohamad Farhad, the intelligence head of Kunduz, said the protesters tried to burn down the U.N. building. The fresh protests Saturday took place in various provinces, including Laghman, Paktika, Baghlan and Nurestan, according to a spokesman for the interior ministry. In Laghman province, at least 15 people were injured when hundreds of protesters tried to attack the governor's house and office, authorities said. Police and soldiers intervened, with some injured in the confrontation, said Abdul Rahman Sarjang, a local police chief. Two civilians and an officer were in critical condition, Sarjang said. But protests in most of the northern regions ended peacefully, police spokesman Lal Mohamed Ahmadzai said.