BEIJING, August 6, 2008 (AFP) - Two US and two British nationals who unfurled a giant 'free Tibet' banner near an Olympic venue in Beijing on Wednesday have been ordered to leave China, the state Xinhua news agency said.

Two of the protesters, members of the Students for a Free Tibet group, will leave on Wednesday and the other two on Thursday, the report said, citing police.

The activists raised Tibetan flags and two 140-square-foot banners near Beijing's iconic 'Bird's Nest' stadium, pictures released by the group showed.