<span style="color: #222222;">In Kerala, four construction workers were killed when earth caved in at a construction site at the Special Economic Zone  at Kalamassery in Kochi this afternoon.<br />'' <br />''All those killed in the mishap were migrant workers hailing from West Bengal..<br />'' The accident took place when earth was being removed for the construction of a building at the Nest Electronic City.<br />''</span><br />'' <span style="color: #222222;">Two workers,   rescued from the accident site have been admitted to the Ernakulam Medical College Hospital. Authorities said their condition is stable.<br />''<br />''Search is on for another person who is believed to be trapped underneath.</span>