BEIJING (AP) — A Chinese medical team charged with treating imprisoned Nobel Peace laureate Liu Xiaobo has stopped using cancer-fighting drugs so as not to overwhelm his severely weakened liver, raising concerns that China's most prominent political prisoner is critically ill.

The team decided to stop use of an inhibitor drug for advanced liver cancer in light of Liu's rapidly deteriorating liver functions, according to a statement Friday on the website of the First Hospital of China Medical University.

It said a traditional Chinese medicine anti-tumor treatment was also suspended while low-mo...