Taliban militants have killed at least a dozen Afghan police and abducted up to 40 others in two separate attacks in the south of the country.
In the southern province of Zabul, a senior police official, Mohammad Rasoul, was killed and four other people, including two senior provincial officials, were wounded after the Taliban hit their car with a rocket last night.
"They were part of a reinforcement sent to help a group of highway police who had come under Taliban attack on a road of Zabul," Yousuf Stanizai, the Interior Ministry spokesman, said.
An official in Zabul said more than ten policemen were killed in the Taliban assault.
The raid in Zabul came hours after the Taliban attacked a police base in Chora district of neighbouring Uruzgan province and abducted up to 40 policemen, an official in Kabul said.
Mullah Ahmad, a Taliban commander, said the militants had taken the police hostage and the Taliban's leadership would decide their fate. He said militants had killed 12 police in the attack before kidnapping the others.
Meanwhile, the capital Kabul was calm this morning following anti-US riots two days earlier, in which seven Afghans were killed. The riots were sparked by the crash of a US military vehicle which killed five civilians.
A night curfew has been in operation in the city, and Afghan troops were patrolling the streets.
The violence in Zabul and Uruzgan comes amid a series of operations by US-led coalition forces in the south in the past two weeks. Some 350 people have been killed, many of them in air strikes.
Most of those killed were militants, but the toll also includes dozens of police, at least 17 civilians and four foreign troops.
It is the bloodiest period in the insurgency since coalition troops overthrew the Taliban government in 2001.
The Taliban and their Islamist allies are mostly active in the southern and eastern areas. Some 23,000 coalition troops are hunting the militants while a NATO-led force has begun expanding its mission into the south.