The Supreme Court on Tuesday overturned the result of the Chandigarh mayoral poll in which the BJP candidate had emerged an unlikely winner, and declared defeated AAP-Congress alliance candidate Kuldeep Kumar as the new city mayor.

It also ordered prosecution of the returning officer for the poll, Anil Masih, a BJP leader, for his "misdemeanour", after finding serious faults in the conduct of the January 30 election.

The apex court made it clear that it was not quashing the entire electoral exercise and restricting itself to dealing with the wrong-doings in the counting process which led to invalidation of eight votes cast in Kumar's favour.

A bench headed by Chief Justice D Y Chandrachud said it was evident that Masih made deliberate attempt to deface eight ballot papers.

The BJP had won the mayoral poll defeating the comfortably placed AAP-Congress alliance candidate after the returning officer declared as invalid eight votes of the coalition partners, drawing accusations of tampering with ballots.

Manoj Sonkar of the Bharatiya Janata Party (BJP) had defeated Kuldeep Kumar after polling 16 votes against his rival's 12 to bag the mayor's post. Sonkar, however, resigned subsequently, while three AAP councillors defected to the BJP.

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