The police on Wednesday recovered the body of the officer investigating the mysterious death of computer graphics teacher Rizwanur Rehman, from railway tracks at Mankundu station in Hooghly district of West Bengal.
Officer in-charge of Sheoraphuli GRP S Bhattacharya said that it was prima facie a case of suicide by Arindam Manna.
Manna's relatives, however, suspect foul play in the incident.
Arindam Manna (31), a GRP officer of Dum Dum, was a resident of Howrah.
The police said that the head was severed from the body. The postmortem of the body was done at the Walsh hospital, Serampore.
An FIR filed with the police said that the body bore marks of injuries in the right leg, left eye and throat.
He was the first investigating officer in the case of the mysterious death of Rizwanur Rehman in 2007.