BAGHDAD, Iraq — Residents dug through the rubble of devastated buildings today in a predominantly Shiite neighborhood of Baghdad that was pounded by a barrage of rockets, bombs and mortars, killing at least 47 people and injuring dozens.

Officials said the rockets came from a mostly Sunni district, evidence that the sectarian violence roiling the capital shows no sign of stopping despite an additional 12,000 U.S. and Iraqi troops rushing in to bring peace.

The office of Prime Minister Nouri al-Maliki said in a statement that 47 people were killed and 100 injured. The head of a municipal council, Mohammed al-Rubaie, put the death toll at 62. The discrepancy could not be explained.

KABUL, Afghanistan — Fighting in Afghanistan left at least 25 insurgents and five Afghan security forces dead, officials said Sunday. Defying the spike in violence, Afghan officials announced plans to thwart attacks on schools, which have killed 41 students and teachers and destroyed more than 140 schools.Rebel violence has soared during the past year, leading to the heaviest fighting since the 2001 ouster of the Taliban regime. In the country's south and east, NATO- and U.S.-led troops are pursuing a fierce campaign against insurgents to extend the reach of Afghanistan's central government.The insurgents have targeted teachers, students, health workers and aid officials as well as security forces.