Narayan Pandey, a follower of the self-styled godman, was arrested by the Sadar Bazar police of Shahjahanpur in connection with the murder of Kripal Singh, police said.
Pandey, who admitted to his role in Singh's murder, was produced in the court and sent to jail, they said.
Singh was on July 10 shot by motorcycle-borne assailants in Cant police station area. He had been Asaram's disciple in his Jodhpur ashram and was called here with the help of Jodhpur Police.
They had earlier tried to buy over Singh by offering Rs 10 to 20 lakhs but he did not relent and as the last resort he was eliminated, police said.
Also Read
Asaram has been in a jail in Jodhpur since September 2013. Two months later, he, along with his son Narayan Sai, was booked for the alleged rape of two sisters at their ashram in Gujarat's Surat.
Nine witnesses have been attacked so far and two have died.