Bomb blasts in Afghanistan kill at least 10 policemen

Three separate bomb explosions in Afghanistan on Monday killed at least 10 policemen, a day after a Taliban suicide bomber blew himself in Kabul's police headquarters, killing one person, police officials said.

The Taliban claimed responsibility for two of the attacks. Seven policemen were killed in the eastern province of Logar province when a suicide bomber blew himself up at the provincial police headquarters, Reuters reported. 

In Nangarhar province, also in the east, three policemen were killed in the city of Jalalabad by a bomb planted in a rickshaw, officials said. It was not clear who was behind the third blast, which took place in Kabul and was caused by a bomb planted in a flower bed near a university, wounding three people.

Taliban violence has increased as foreign troops have withdrawn, leaving Afghan security forces to fight alone or with limited air support. The police and army have suffered heavy losses as a result. A top U.S. commander in Afghanistan recently said the casualty rate among Afghan government forces was "not sustainable."

This year alone, more than 4,600 Afghan soldiers and police have been killed in the fighting, according to U.S. figures.

The Taliban were ousted from power in 2001 by U.S.-led forces and they have been fighting ever since to oust foreign troops and the U.S.-backed government, even as most foreign forces are pulling out by the end of this year.

The Taliban also claimed responsibility for Sunday's suicide bomb attack on police headquarters in the capital that killed a senior officer. 

Al Jazeera and wire services