Another accused in the Samjhauta express blasts, Ram Lakhan Maharaj alias Dhan Singh alias Swami, has been arrested by Satna police in Madhya Pradesh.He was handed over to the National Investigation Agency, NIA yesterday. This is the second arrest in Samjhauta Express blast case in three days. Earlier, on Saturday, the NIA had nabbed another accused, Rajender Chaudhary alias Samundar from Nagda in Ujjain. – NIA believes that the connection of Dhan Singh was with right-wing Hindu outfits, involved the 2006 and 2008 Malegaon blasts, Samjhauta train blasts, Ajmer and some other incidents.