A Chinese filmmaker, who was arrested while making a documentary on house churches, has been placed under "supervised residence" at an undisclosed location, his sister on a blog, Wednesday.

Since Feb. 22, Wu Hao has been under police custody, with few details released about his condition and the charges surrounding his arrest. Demands by his sister, Wu Na, to see Hao were repeatedly denied.

Paris-based rights group Reporters Without Borders quoted Wu’s lawyer as stating that police have moved Wu to a state-run guesthouse.

According to an Associate Press report, Chinese authorities have often resorted to house arrests for people in isolated small hotels that can be easily monitored. Wu Na was later quoted by AP in a phone interview that Wu’s lawyers were not notified of Hao’s location.

She added that the "change from detention to house arrest is good," and that it may indicate the police "cannot find anything, any evidence against" Wu.

Wu also has links to Gao Zhisheng, an outspoken lawyer in Beijing whom had lost his license for involving himself in politically sensitive cases.

Wu was apparently arrested while working on a film about a congregation outside of the state-sanctioned Three Self Protestant Movement (TSPM) churches.

Prior to his detention in China, Wu Hao had lived in Boston, New York and California for 12 years. In 2004, he returned to his homeland to make documentaries.