Lt Col Kittipoom Thinthalang of the Thalang Police was notified of the accident at 7:20pm.
Police and rescue workers arrived to find the body of Nattharika Riyathan, 44, and her Phuket-registered motorbike in the middle of the road.
Miss Nattharika had suffered severe head trauma.
Metres away was a motorbike and two injured men: Piyakarn Supala, 27, and Worayuth Nualpruiwan, 33. Rescue workers took both to Thalang Hospital.
The extent of their injuries was not reported.
However, police reported that Mr Piyakarn was the driver of the motorbike and Mr Worayuth was his passenger.
Witnesses told police that Miss Nattharika was turning right at the T-junction (see map below), police noted in their report.
Mr Piyakarn drove through a red light from another side of the intersection and crashed into Miss Nattharika, Col Kittipoom said.
Witnesses said the men were travelling at high speed, he noted
“Miss Nattharika fell and hit her head on the road, causing her death,” Col Kittipoom said.
It was not reported whether any of the persons involved in the accident were wearing a helmet.
“Right now we are still investigating the details of this accident,” Col Kittipoom told The Phuket News.
No other details were offered.