A fire that destroyed a Greensboro apartment before dawn Saturday has killed five children who lived there. Two of the children died shortly after the fire broke out at the apartment complex at Summit Avenue and East Cone Boulevard. Three children died of their injuries Sunday at Brenner Children's Hospital in Winston-Salem. All had been brought there in critical condition a day earlier. The children were young and ranged in age, according to various sources, from 18 months to 6 or 8 years old. Authorities have not yet made their identities public. Greensboro fire investigators continued to work Sunday to identify the cause of the fire, which destroyed Apartment G at 3100 Summit Ave.