According to police, firefighters were attempting to bring the blaze under control when a wall and an iron beam inside the factory suddenly collapsed, trapping and injuring five personnel. Noida: Two firefighters were killed, and three others injured after a wall and an iron beam collapsed while they were battling a massive fire at an electronic chip manufacturing unit in Greater Noida, police said on Tuesday. The blaze broke out late Monday night at ILGIM, an electronic chip manufacturing company located in the Ecotech-3 industrial area of Greater Noida. According to police, firefighters were attempting to bring the blaze under control when a wall and an iron beam inside the factory suddenly collapsed, trapping and injuring five personnel. The injured firefighters were rushed to hospital, where Fireman Rohit Yadav and Head Constable Driver Tirathpal succumbed to their injuries.