An under-trial prisoner, Mir Sahiruddin, managing director of chit fund company Green Ray International Limited (GRIL), died of heart attack at the Jharpada Special Jail here on Sunday.
Sahiruddin, who was lodged at the jail since 2017, collapsed to the ground while going to attend nature's call in the morning.
The jail authorities rushed him to the Capital Hospital but the doctors there declared him dead.
In 2017, the CBI arrested Sahiruddin, who was on the run for nearly three years. A native of the Baleswar district, Sahiruddin had fled with his family to Nigeria after the scam came to light.
Later, he had entered India on a Bangladesh passport by impersonating himself as Ahmed Hussain and was arrested by the Central agency from Kolkata
The Green Ray company is accused of siphoning off of over Rs 1,000 crore from investors of Odisha and 13 other States on the pretext of providing them lucrative returns on their investment in different chit fund schemes.
The Odisha Crime Branch which was investigating the chit fund scam before the CBI, had freezed cash deposits of Rs 57 lakh and also confiscated 20.68 acre of land of the company.