Kochi, Mar 18 : Four migrant workers hailing from West Bengal have been killed and one is feared trapped following a landslide at Nest Electronic City in Kalamasserry Kinfra Park here on Friday, police said. The deceased were identified as Faijula Mandal, Kutus Mandal, Naujrsh Ali, Noor Amin Mandal. Effort is going on to rescue Muhammad Noorulla from the debris. Further rescue work is underway, police added. DS JNA