The Solomon Islands acting police commissioner says the two Samoan police officers in a RAMSI vehicle that hit and killed a nurse over the weekend were off-duty.
Peter Marshall says Solomon Islands Police force are leading the main investigation into the woman's death.
According to our correspondent witnesses at the scene said the two officers appeared to be intoxicated with alcohol.
He says the driver is in Honiara for questioning but they now want to talk to the officer who was injured but flown to Australia for medical treatment.
Mr Marshall says they will question him after his operation scheduled for Thursday.
"We've had investigators working on it. The Solomon Islands police force is the principal and only lead agency in relation to this matter, with RAMSI offering some support as and if we require it. The investigation will continue for a good number of days to come."
Peter Marshall was among other police and RAMSI officials who attended Hilda Ilabe's funeral on Malaita on Monday.