Bhairo Ram (35) was taken into custody on Tuesday for his alleged involvement in a case of theft. He was in lock-up and was found hanging yesterday morning, they said.
After the incident came to light, SHO of Deshnok Police Station Madan Kadwasara was suspended and other policemen were shifted to police lines, they said.
Postmortem of the body was conducted by a medical board, while a judicial inquiry in the matter has been ordered, they added.