Patna: The family of 34-year-old Satnam Singh Mann, who died in mysterious circumstances in Kerala, want a CBI probe into his death.

Mann, from Bihar's Gaya district, was brought dead to the Medical College Hospital in Thiruvananthapuram on Saturday, his family and relatives said.

"We want a CBI probe into my grandson's unnatural death," his grandfather Babu Kishore Singh said.

A businessman, Singh told IANS over telephone that neither he nor his family was satisfied by the Kerala government's decision to order a Crime Branch probe into the death.

"We strongly suspect that my grandson was brutally tortured in jail. It's a case for CBI," he said.

Mann, a law student in Lucknow, was arrested when he created disturbances at spiritual leader Mata Amritanandamayi's ashram near Kollam last week. He was charged with trying to attack the Mata.