"We can't silently watch the harassment of our monks and pilgrims in Tamil Nadu. We want to stop handling cargo from Indian ports as a result", Mahesh Samarawickrema, a dock workers' trade union official told reporters.
Tamil Nadu chief minister Jayalalitha had earlier refused to host the Lankan cricketers in Chennai in view of the growing political tensions, stemming from the treatment of ethnic Tamils in Sri Lanka.
The port workers held placards against Tamil Nadu politicians Jayalalithaa and Karunanidhi, in the port premises.
Port figures showed that almost 60 per cent of Colombo port's annual container volume of 4.1 million TEUs (twenty-foot equivalent unit, a measure used for capacity in container transportation) comes from south Indian ports.