JALALABAD, Afghanistan (Reuters) -- A suicide bomber hurled himself on a moving police car in eastern Afghanistan on Saturday, wounding two policemen, an official said, calling it the latest in a spate of suicide attacks by Taliban guerrillas.

The attacker was blown to pieces in the incident on a main road just south of Jalalabad city, the provincial capital of the eastern province of Nangarhar, the official said.

"The suicider had strapped explosive materials on his body," said Akram Basharyar, a senior police official for Jalalabad, adding a police colonel and his driver were wounded.

He said the attack was the work of Afghanistan's "enemies", a term usually used by Afghan officials for describing Taliban insurgents.

No Taliban official could be contacted for comment, but the guerrillas have been behind a series of attacks including suicide raids in Afghanistan in recent weeks.

On Thursday, ten civilians were killed and 50 others, including two policemen, were wounded when a Taliban suicide bomber blew himself up in a bazaar in the central province of Uruzgan during a visit by U.S. ambassador Ronald Neumann.

The Taliban, who U.S.-led forces overthrew from power in 2001, said the target was the U.S. envoy and Afghan officials who were attending to inaugurate a U.S. funded building several hundred meters away. No one among them was hurt.

The Taliban are mostly active in southern and eastern areas close to the border with Pakistan. More than 50 U.S. soldiers have died in Taliban-linked attacks last year in Afghanistan, the bloodiest period since the ouster of the radical Islamists.