Thousands of Afghans have fled their homes in Helmand province as fierce fighting between government forces and the Taliban erupted after the US military began withdrawing its remaining troops.

AFP reports Afghan forces pushed back a string of insurgent attacks on checkpoints across the southern province, where the US military on Sunday handed over a base to government forces as part of its formal pullout that began on 1 May.

About 1,000 families have fled their homes to escape the fighting that erupted on the outskirts of Lashkar Gah, the capital of Helmand, and some other parts of the province, Sayed Mohammad Ramin, the region’s director for refugees told AFP.

He said the families had taken refuge in Lashkar Gah and had come from areas where fighting was intense in the past two days.

“We will survey their needs tomorrow, but many who still have not found shelter in the city need urgent assistance,” Ramin told AFP.

The defence ministry said government forces had killed more than 100 Taliban fighters in Helmand in the past 24 hours when the insurgents attacked some checkpoints on the outskirts of Lashkar Gah.

Another 22 al-Qaida fighters from Pakistan were also killed in the fighting, the ministry said.

Officials said the Taliban fighters initially captured some checkpoints but they were retaken by government forces who pushed back the insurgents, AFP reported.

“The enemy has now lost all the areas it had captured and suffered heavy casualties,” Attaullah Afghan, head of the Helmand provincial council, told AFP.

The Taliban said dozens of Afghan troops were killed in the fighting. Both sides are known to exaggerate casualties inflicted on the other.

UK-based medical care provider Emergency said it is receiving large numbers of “war wounded patients” at its surgical centre in Lashkar Gah due to widespread fighting in the area since 1 May.

It said the hospital received 106 patients, of which 65 had to be admitted.

“These are very difficult days in Lashkar Gah … We have also put beds in the physiotherapy room to accommodate all the injured patients,” Viktor Urosevic, medical coordinator at the hospital, said in a statement issued by Emergency.

Emergency’s Afghanistan coordinator, Marco Puntin, said fighting in Helmand was not an isolated event.

“We have witnessed an escalation of conflict across Afghanistan,” he said.

Fighting was also reported in several other provinces since the US military formally began pulling out its remaining 2,500 troops, AFP reported.

The Pentagon has downplayed the fighting.

“We’ve seen nothing thus far that has affected the drawdown, or had any significant impact on the mission at hand in Afghanistan,” US Department of Defence spokesperson John Kirby said on Monday.

Nearly 20 years after US and allied Natotroops invaded Afghanistan and ousted the Taliban government as they pursued al-Qaida after the September 11, 2001 attacks, President Joe Biden ordered in April the final withdrawal.

On Tuesday, US officials said the military has completed two to six percent of the withdrawal.