Child killer attacked his cellmate at Belmarsh

A child killer who beat his five-year-old stepson to death in a park for losing his trainer admitted attacking a cellmate at Belmarsh Prison. Marvyn Iheanacho, 39, punched child model Alex Malcolm repeatedly against a metal fence as the boy pleaded for his life and then attacked his mother when she tried to call an ambulance. Iheanacho then calmly smoked a cigarette and denied Alex treatment for two hours. The boy never regained consciousness and died two days later from…