(Compass) – Chinese authorities detained and interrogated well-known house church leader Samuel Lamb after worship services on Sunday, June 13. Ten of his co-workers were also detained and interrogated. This is the first time in 14 years that Chinese authorities have taken repressive steps against Pastor Lamb, who reportedly hosts 3,000 worshippers per week at his new meeting place in Guangzhou . Sources in China say it is no coincidence that just two days earlier, authorities detained and later released 100 leaders of the China Gospel Fellowship house church network in the central city of Wuhan . Prior to these incidents, members of a high-level Politburo meeting reportedly issued a secret directive calling for a crackdown on all illegal religious activities such as unregistered house church meetings. Chinese authorities may be over-reacting to high profile publicity concerning house churches and the Back to Jerusalem Movement published in overseas media.