Beijing: Chinese security forces sealed off parts of Lhasa on Saturday while Tibet's government-in-exile saying said it was investigating reports of fresh protests, just weeks after the city was shaken by an anti-government riots.

Reports of the closures coincided with a visit by a group of diplomats, who were led on a closely guarded tour of the city which has been the at the heart of unrest.

The unrest coems just months before the opening of the Beijing Olympics.

"We don't know how many people, but it seems it's quite a lot of people," Tenzin Taklha, a spokesman for the Dalai Lama said of the events in Lhasa. "I think it's timed with the visit of the diplomats."


The London-based International Campaign for Tibet said it had heard from three sources that security forces had surrounded Lhasa's main temples, Jokhang and Ramoche.

The group's spokeswaoman, Kate Saunders, said, "The whole area has been shut down."