The Royal Solomon Islands Police Force has advised that the fatal single-vehicle crash, which resulted in the death of high profile Honiara businessman Rolland Timo, at Mbaranamba on Friday evening "was a tragic accident."

The accident was originally reported to authorities including Police and Ambulance service by an off-duty police officer who lives quite close to the accident scene.

Director of Kukum Traffic Inspector Maxwell Saelea today said that it appeared that the driver, Mr Timo, sustained serious head and internal injuries in the crash.

"He was rushed to the National Referral Hospital by Ambulance but declared dead on arrival," Inspector Saelea said.

"We have excluded any suspicious circumstances and no post mortem is required."

Inspector Saelea said Friday's accident was a tragic loss of life, resulting in much heartache for Mr Timo's extended family and friends.

Inspector Saelea said the Police investigation was still continuing with more statements expected to be taken from additional witnesses at the scene who heard and saw the accident occur.

"However, at this stage we believe the driver was affected by alcohol and likely travelling at 60-70 kmh uphill at the time of the crash," Inspector Saelea said.

"Two female passengers travelling in the car were both relatives of the driver. They suffered minor injuries but are very lucky to be alive."