On 7 September 2005, while Chen was in Beijing to publicize his class action lawsuit against the Linyi city family planning staff, he was reportedly abducted by security agents from Linyi and held for 38 hours. Recounting the incident to foreign journalists, Chen said that authorities threatened to levy criminal charges against him for providing state secrets or intelligence to foreign organizations. After Chen refused negotiations with local officials to cease his activism, Linyi authorities placed him under effective house arrest beginning in September 2005. When he attempted to escape in October, he was beaten.