The new Chinese investigation into the death of Briton Neil Heywood is said to be almost finished.
The businessman was found dead in a hotel in Chongqing last November.
Some reports from China say the wife of top Chinese leader Bo Xilai - who was recently sacked -was involved in poisoning him with cyanide.
ITV News has been told at least five people were involved in the plot to kill Mr Heywood.
Our China Correspondent Angus Walker has tracked down where some are believed to be held.