Pakistani authorities have stopped a protest over US drone strikes led by cricketer-turned-politician Imran Khan from entering the troubled region of South Waziristan, prompting allegations the government is ambivalent about US actions.

Khan, who started the protest on Saturday, blames the government for allowing the US to operate in the country and had planned to lead the march from the capital Islamabad into South Waziristan, a tribal area frequently hit by the drone strikes.

But authorities on Sunday blocked the protesters’ path with shipping containers on the highway. After several delays the army told protesters it was unsafe to be on the road after dark and they turned back.

Pakistan’s military and the civilian government publicly complain that the strikes – aimed at remnants of al-Qaeda and

the Taliban – infringe the country’s sovereignty and cause civilian casualties. Yet the government has done little to stop them.

“The drones are inhumane,” Khan, wearing a white turban, said as he stood on a vehicle in the town of Tank, surrounded by thousands of protesters.

“Are these people not humans? These humans have names. Drone attacks are a violation of human rights,” he said.

Pressure on the US

About 30 Americans travelled to Pakistan to take part in the protest and apologise for the strikes to men and women who had been maimed or lost family members.

“We have to put pressure on the United States government,” said Billy Kelly, a 69-year-old Vietnam veteran from New York.

The United States says the strikes have killed top Taliban and al-Qaeda commanders and civilian casualties are minimal. But it refuses to say how targets are selected or how the military determines whether the dead were fighters or civilians.

The Bureau of Investigative Journalism, which tracks drone strikes, said between 1,232 and 1,366 people had been killed since the strikes began in 2004. Between 474 and 884 were believed to be civilians, it said.

A recent report, Living Under Drones, said that large swathes of Pakistan’s tribal areas were terrorized by the drones.

Civilians were scared to go to school or work in case they were targeted, the report by Stanford and New York Universities said.

Getting accurate data on casualties and the effects of drones is extremely difficult since the government allows few foreigners into the tribal areas and the Taliban often seals off the sites of strikes. Drones also often attack people arriving at the site of the strike.

‘Pro forma protests’

The march highlighted the way that drones complicate the Pakistani government’s already uneasy relationship with the US. Americans often justify the strikes by saying Pakistan is unable or unwilling to crush the insurgency.

“The government is making pro forma protests but Imran has shown the world he will do something,” said Shamsad Ahmed Khan, a former foreign secretary. He noted the government declared a national day of protests over a blasphemous film last month, but it had never called for such a protest over the drone strikes.

Some Pakistanis, however, questioned why the marchers were not talking about atrocities by the Taliban or the Pakistani army, both of which have killed far more people than the drone strikes.

Columnist Saroop Ijaz said that the Taliban frequently and deliberately target civilians by bombing hospitals, schools,

funerals and shrines.

“Drone attacks began and continue because of the ideology of murder and not the other way around,” he wrote in the Express Tribune.

The Taliban denounced the march as political theatre ahead of next year’s elections and condemned Khan and his party as “secular and liberal”.