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Anja Niedringhaus, Associated Press
An Afghan man waters the flowers on the grave of assassinated former Afghan President Burhanuddin Rabbani in Kabul, Monday, Oct 3, 2011. An Afghan government commission investigating the death of the country's former president has accused Pakistan of not cooperating with its investigation, after alleging that Pakistani intelligence officials also had advance knowledge of the plot.

KABUL, Afghanistan — Hundreds of people marched through the streets of the Afghan capital on Thursday, demanding the immediate withdrawal of international military forces ahead of the 10th anniversary of the U.S. invasion.

The peaceful demonstration in downtown Kabul was meant to mark the Oct. 7 invasion of Afghanistan 10 years ago, following the Sept. 11 terrorist attacks against the United States.

The U.S. invasion came after Taliban leader Mullah Omar refused to hand over Osama bin Laden, purportedly because of his disbelief that the al-Qaida chief was responsible for the attacks and because it went against the Afghan tradition of hospitality and protection of guests.

U.S. forces killed bin Laden in a raid on his hideout in Pakistan in May.

The demonstrators chanted "no to occupation," and "Americans out" as they marched through the streets holding pictures of Afghans killed in violence, and later burned an American flag. The demonstration was organized by a small left wing party.

No official events have been announced so far to mark the invasion, neither by the government nor NATO.

"The United States said it came to help the Afghan people and provide a good life to Afghan people, but their true purpose was to occupy our country," said Farzana, a 22-year-old woman who goes by one name. "It is 10 years since the invasion of Afghanistan and all it has left behind is the blood of the Afghan people. We want the U.S. to leave our country."

She added that "suicide attacks, insecurity and corruption are increasing day-by-day."

In southwest Helmand province, insurgents opened fire on a civilian bus traveling in the Girishk district, killing a man and a child and wounding 16 others, the governor's office said. And in southern Uruzgan province, a car bomb killed the commander of a highway security force, Wali Jan, as he walked out of his home, the police said.

The U.S.-led coalition currently has more than 130,000 troops in Afghanistan, with about 98,000 from the United States.

International forces have begun handing over responsibly for security to Afghan forces and all foreign combat troops are to leave Afghanistan by the end of 2014. President Barack Obama in July announced that he would pull 10,000 troops out of Afghanistan this year and 23,000 more by next September.