KARACHI: In a major breakthrough in the 2007 Samjhauta Express blast case, the Indian authorities on Saturday arrested Rajesh Chaudhary, suspected to have planted bombs in a Pakistan-bound train, Press Trust of India reported.

Rajesh Chaudhary alias Samundar was arrested from Ujjain, Madhya Pradesh. There was a bounty of Rs 500,000 on his head also.

The blast, in 2007 had left nearly 70 dead and 100 injured — most of them Pakistanis.

The National Intelligence Agency (NIA) has already charged Aseemanand, Sunil Joshi (now dead), Lokesh Sharma, Dange alias Parmanand and Kalasangra for hatching a criminal conspiracy which resulted in blasts in the Samjhauta Express near Deewana railway station in Haryana’s Panipat district, about 80 km from Delhi.