Afghan Taliban militants and villagers attend a gathering to celebrate the US negotiated peace deal and their victory over the US in Afghanistan in the country's Alingar District of Laghman Province on Monday. Photo: AFP

The Taliban called an abrupt end to a partial truce on Monday, just two days after signing a deal with the US that was meant to bring peace at last to Afghanistan.

In the southern province of Kandahar, considered the Taliban's heartland, fighting broke out in at least two districts.

"They started attacking five of our posts in Panjwahi and Maiwand," local police chief Sultan Mohammad Hakimi told AFP. "Fighting is ongoing."

The Taliban ordered its fighters to recommence attacks against Afghan army and police forces, apparently ending an official "reduction in violence" that had seen a dramatic drop in bloodshed and given Afghans a welcome taste of relative calm.

The partial truce between the US, the insurgents and Afghan forces lasted for the week running up to the signing of the US-Taliban accord in Doha on Saturday, and was extended over the weekend.

"The reduction in violence... has ended now and our operations will continue as normal," Taliban spokesman Zabihullah Mujahid told AFP.

"As per the [US-Taliban] agreement, our mujahideen will not attack foreign forces but our operations will continue against the Kabul administration forces."

The Taliban's military commission circulated instructions for fighters to resume operations, according to a document that an insurgent provided to AFP.

Soon after, an Afghan army commander told AFP the Taliban were attacking military positions in the northwest province of Badghis. At least one soldier was killed.

But the Taliban denied responsibility for a bomb blast at a soccer ground in Khost in eastern Afghanistan, where three brothers were killed.

President Ashraf Ghani said Sunday he would continue the partial truce at least until talks between Afghan officials and the Taliban kick off, supposedly on March 10, though he angered the militants by rejecting a prisoner swap component in the deal.

Fawad Aman, a defense ministry spokesman, said Monday the government was "checking to see if [the truce] had ended."

The US cautioned that an immediate halt to violence had not been expected.

"The Taliban is not a monolithic group, there's multiple terrorist organizations operating," General Mark Milley, chairman of the joint chiefs of staff, said in Washington.

"To think that [violence] is going to go to zero, immediately - that's probably not going to be the case."

The US has previously said it would defend Afghan partners if they come under attack.

The Doha deal includes a commitment to swap 5,000 Taliban prisoners held by the Afghan government in return for 1,000 captives, but Ghani said the US had no authority to negotiate such an exchange.

"Ghani's stand shows that the Americans hadn't done the groundwork before signing the agreement," a Taliban source in Pakistan said.

AFP