From dpa:
The Hong Kong government was Tuesday being pressed to investigate claims that plain-clothes Chinese police dragged activists and journalists across the border into China.
Four activists and two journalists from Hong Kong were detained for three hours in China Sunday after a protest rally at an immigration
control point on the Hong Kong side of the border.The six, who protested the jailing in China on December 25 of prominent dissident Liu Xiaobo, claim they were dragged across the border by plain-clothes Chinese police.
