Who is Anil Masih, accused of ballot tampering by AAP, Cong in Chandigarh mayor poll

A video of Anil Masih has been doing rounds on the internet. The Chandigarh polling officer was accused of ballot tampering by the opposition parties. Oppn claimed ballot tampering after the invalidation of eight votes, and that the video allegedly showed Masih marking ballots. Who is Anil Masih, the presiding Chandigarh polling officer?