Varanasi blast: Probe agencies zeroing in on suspects

The National Investigating Agency (NIA) and Uttar Pradesh Anti Terrorist Squad (ATS) are on the trail of two youths who, the two agencies suspect, had triggered the blast at Sheetla Ghat in Varanasi on Dec.7, 2010.
http://ummid.com/news/2011/September/27.09.2011/nia_up_ats_zeroing_on_varanasi_blast.htm