Brandon Nunu Asiata, 16, managed to stab the 22-year-old man in the face, head, wrist and leg before he collapsed and died on the platform at Bankstown railway station in front of commuters yesterday evening.The boy's 15-year-old brother was stabbed in the leg.The alleged killer, Mosa Julius Mbele, has been charged with murder over the stabbing death.Superintendent Dave Eardley says Mbele has faced a bedside court hearing in hospital. Mbele has serious stab wounds."Earlier this afternoon, the 22-year-old Bankstown man was remanded in custody charged with the murder of the 16-year-old boy," he said."He's currently remaining in hospital being treated. As soon as he's able, he'll be transferred to the care of Corrective Services."Friends say they cannot understand why the 16-year-old was stabbed...