Intelligence agencies have been put on high alert after they received inputs of Indian Mujahideen (IM) making new modules of sleeper cells, India Today reports on December 20. Top terrorists of Indian Mujahideen, who had been hiding in different countries, including Pakistan, have set up a new module of a sleeper cell in India. IM had carried out dozens of terrorist attacks in Delhi, Mumbai, Gujarat, Bangalore Hyderabad, Pune, and Bihar from 2006 to 2013-14, in which hundreds of people lost their lives. The IM carried out serial blasts in Delhi in 2008.