'IIT Baba' Abhay Singh, who burst into the limelight during the Maha Kumbh, was arrested from a hotel in the Shiprapath area with a small quantity of ganja, police in Jaipur said on Monday.
He was later granted bail, they added.
Shiprapath SHO Rajendra Kumar Godara said the police received information about a video purporting to show Singh threatening to commit suicide becoming widely circulated on social media.
Acting on the information, the police reached the spot and questioned Singh. During the questioning, a small quantity of ganja was found with him, Godara said.
The police seized the ganja and arrested Singh, he added.
Singh -- who has been booked under the Narcotic Drugs and Psychotropic Substances (NDPS) Act -- was later released on bail.
Singh was later spotted having tea, surrounded by some people, near the hotel at Riddhi Siddhi Chauraha.
He also cut a cake, with those around him saying it was his birthday.
Singh told reporters that he had made a 'normal' social media post and its misinterpretation had led to the police coming to the hotel.
He said he was released because he had only a small quantity of ganja in his possession.