A Pakistani student who was 10 years old at the time of the 9/11 terrorist attacks said freedom and the ability to travel freely outside his country were among the victims of that day.

"We lost our liberty and openness has disappeared," said a 21-year-old Muslim student identified only as Sultan.

"Our lives changed a lot," he said, describing the fears borne from U.S. drone attacks in the northern part of the country and bombs planted by al-Qaida or other terrorist elements.

The 21-year-old said he has grown up in an atmosphere of suspicion, which did not improve after Osama bin Laden was found hiding in Pakistan.

People even asked him if he felt any sympathy for the 9/11 victims. "Of course we sympathize," he said.

"If you see someone jump from the 100th floor, how can you not feel sympathy?"