One official was killed while 24 persons were wounded in two bomb attacks in Afghanistan on Tuesday, sources said.

In one attack, 18 civilians were wounded when a bomb went off in Charikar city, the provincial capital of eastern Parwan province.

The blast occurred at around 9:30 a.m. local time Tuesday in the city 55 km north of Kabul, a provincial health official told Xinhua.

Four injured were in critical condition, the source added.

In a roadside bomb attack, a senior administrative official was killed and six civilians were wounded in eastern Nangarhar province, the latest in a string of targeted killing.

"The Administrative Rights director of Qarghahi district of eastern Laghman province Mohmood Quraishi was killed in a bomb attack while six civilians were wounded in the blast which took place in Sarrah Road district of neighboring Nangarhar province Tuesday morning," the Nangarhar provincial government spokesman told Xinhua.

The Taliban insurgent group fighting the government has intensified attacks in spring and summer known as the fighting season in the war-torn country.

The civilians perceived to be supporting government, civilian government employees, religious leaders, tribal elders and persons involved in peace and reconciliation efforts came under attack in targeted killings.

More than 2,900 civilians were killed and nearly 5,700 wounded in conflicts and Taliban-led attacks in the war-torn country last year, according to official figures.