Bharti was killed by unidentified men late Sunday night when he was returning from a marriage party.
Tension prevailed in the area but the situation was brought under control as additional security forces were deployed, police officials said.
Bharti was a confidant of BJP MP from Siwan Om Prakash Yadav.
He contested the 2010 state assembly polls but lost.
Bharti's family members and supporters considered his murder as a political killing planned by rivals.