The PF (co-pilot) acknowledged the fact that the PNF (commander) took control of the thrust levers in the final approach. The PNF retarded the thrust levers briefly, only the No.1 engine went into reverse (-9% torque) the No.2 engine stayed at 0% (idle) due to the both trust levers being out of asymmetry, this was coincident with the plane rolling left which the AAIU believes prompted the PF to input the flight controls to the right, subsequently the application of power to commence the G/A at 100ft coincided with the commencement of a rapid roll to the right and loss of control and the subsequent crash.