Police in China have accused a prominent human rights lawyer of inciting subversion and creating a disturbance, her lawyer said on Friday, paving the way for possible formal charges.

Citing the need to buttress national security and stability, President Xi Jinping's administration has tightened government control over almost every aspect of civil society since 2012.

Rights lawyer Wang Yu is one of more than 50 lawyers and activists who have been detained by authorities since last month, as part of a crackdown against civil society that has alarmed foreign rights groups and Western governments.