After peace prize, China targets winner's friends

Liu won the prize for his decades of promoting democratic change in China. He is serving an 11-year prison sentence for subversion.

Some of Liu's supporters say they received threatening phone calls from police before they released a letter yesterday calling for Liu to be freed.

Beijing police have not immediately responded today to a faxed question about the complaints of harassment.

China's state-run media has reacted angrily to the peace prize, calling it a tool the West is using to undermine China.