The workers union had decided to observe 67th birth anniversary of national general secretaty N Nanjappan and also unveil a bronze bust at the office.
However, a group of workers opposed the move and an argument ensued between them, police said.
On receiving information, senior police officials, along with some police personnel, rushed to the spot and refused permission to unveil the bust considering the situation.
However, the birth anniversary function went ahead smoothly and former union minister and Rajya Sabha MP S R Balasubramanian, former Tamil Nadu minister Pongalur Palanisamy and several Congress leaders participated.
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