An unknown group calling itself the Chinese Martyrs’ Brigade claims responsibility for the missing plane. In a PDF statement sent to a number of Chinese journalists, the group says it brought the plane down, and states:
You kill one of our clan, we will kill 100 of you as pay back.
Most Chinese news outlets believe the claim is a hoax, and say it may be an attempt to inflame ethnic tensions following a series of separatist attacks in China’s Xinjiang Uyghur autonomous region, and a mass stabbing in Kunming that killed 33 people. The PDF file was sent via Hushmail, an anonymous remailer service that does not allow replies or trackbacks.