A team has been formed to probe the incident, said police.
The brother of the head of Bageshwar Dham temple in Madhya Pradesh crashed a wedding of a Dalit woman and threatened the guests with a katta (local-made pistol), showed a video.
Reports say that Saurabh alias Shaligram, brother of Dhirendra Krishna Shashtri, a religious preacher, was drunk.
Saurabh objected to popular Rai folk dance music being played instead of songs from the Bageshwar Dham at the ceremony in Gada village, said police.
With a cigarette in one hand, Saurabh is seen abusing a man and pointing a pistol over his head.
The video, in internet speak, is now viral.
A team has been formed to probe the incident, said police.
Dhirendra Krishna Shastri is known to travel across the country for religious addresses known as "Katha". Recently, a Maharashtra-based anti-superstition organisation challenged him to show the miraculous powers he claims to possess at an event in Nagpur.