According to twocircles.net Hindutva activists have either been suspected or are under investigation in 16 incidents of bomb blasts in the country. So far, their role has been established in four major blasts – Samjhauta Express (February 18, 2007), Mecca Masjid (May 18, 2007), Ajmer Dargah (October 11, 2007)and Malegaon (September 29, 2008).