Singh allegedly used derogatory language against Shah during a debate show on a local television channel on April 9.
The spokesperson of Manipur Congress, Singh was arrested by Imphal police after the Bharatiya Janata Yuva Morcha (BJYM) president M Barish Sharma filed an FIR against him.
The BJYM president heaped further allegations on Singh of deliberately humiliating mainland Hindus and calling them ‘animals’.
A case was registered against the senior Congress leader under sections 124-A, 295-Z and 505 of the Indian Penal Code (IPC), based on the complaint.
However, Singh was reportedly granted bail by a local court after hearing his case.