A Chinese human rights activist was reportedly lured from his home and detained by police on Friday, in a sign of a more severe environment for political dissidents in the run-up to the centenary of the founding of the Communist Party.

Wang Aizhong received a phone call on Friday from someone who claimed his car had been damaged, Chinese human rights blog Weiquanwang reported. When he left home to check on the vehicle, police took him away.

Up to nine police officers then presented a warrant to Wang’s wife and searched his home. They confiscated 29 books, two computers and a cell phone. Wang’s wife was later summoned to the local police station, where she was questioned about her husband’s contacts and remarks. Police reportedly warned her against speaking out.

A few weeks ago, public security officers prevented Wang from attending a dinner on May 5 with a group of entrepreneurs in Guangdong province. Police broke up the meal gathering and interrogated the attendees until the early hours of the following morning.

Wang is known for his involvement in the “Southern Street Movement,” a democracy reform movement originating in Guangdong. In May 2014, he was subjected to four weeks of administrative detention in the provincial capital city of Guangzhou on suspicion of “disorderly behavior.”

The activist has more than 39,000 followers on Twitter, which is officially banned in China, where the authorities frequently monitor dissidents’ accounts.