610 Offices work with local security agencies to monitor and capture Falun Gong adherents, many of whom are then sentenced administratively to reeducation-through-labor camps (RTL), or, if they continue to practice and advocate for Falun Gong, sentenced to prison.[1] The number of Falun Gong adherents detained in China is estimated to be in the hundreds of thousands; in some facilities, Falun Gong practitioners are in the majority.[7][20]