Twelve employees of the Tamil Nadu State Transport corporation were today injured in a clash between two groups during filing of nomination papers for elections to their Cooperative society here, police said.
Members of CPI (M)'s trade union wing, CITU and the Anna Thozhir sangam (ruling AIADMK) engaged in an altercation before they came to blows, police said.
The injured have been admitted to hospital. Police are maintaining tight vigil in the area.