Members of the Hindu rightwing group Sanatan Sanstha (SS), accused of carrying out the 2009 Diwali eve blast in Goa, 'Googled' circuit diagrams from the internet and later used them to build improvised explosive devices (IED), National Investigation Agency (NIA) officials said.

"In furtherance of the said conspiracy, accused Dhananjay Ashtekar downloaded circuit diagrams using the internet (Google search)," NIA officials said in their chargesheet which was submitted to a local court last week.