Updated

The brother-in-law of China's jailed Nobel Peace Prize winner Liu Xiaobo is under arrest on fraud charges in an apparent effort to put more pressure on the family.

A lawyer for the Liu family said this week that police detained Liu Hui in late January, just before the Lunar New Year, and he was indicted two weeks ago. The lawyer, Mo Shaoping, says the charges stem from a disputed real estate deal and are unwarranted.

The jailing of Liu Hui is the latest blow to the family and especially his sister, Liu Xia. She has been separated from her husband, democracy campaigner Liu Xiaobo, since his arrest in 2008, and she has lived under house arrest since he was awarded the Nobel prize two-and-a-half years ago.