Police are appealing for information following a road traffic collision on the A4069 Llangadog to Llandovery road.
A police spokesperson said: “Carmarthenshire Roads Policing Unit is investigating a fatal road traffic collision which occurred on Saturday 26th August 2017 at approximately 2:30pm, on the A4069 Llangadog to Llandovery road, near to Penrock Cottages, Llandovery.
Two vehicles were involved in this collision, a red Fiat 500 and a Blue Aprilia motorcycle, with the rider of the motorcycle sustaining serious injuries.
The rider, 74 year old Colin Herridge from Carmarthen, was taken to hospital where he sadly died on Monday 28th August 2017.
Any witnesses that may have information in relation to this incident are asked to contact Pc 766 Roger Jones of the Carmarthenshire Roads Policing Unit on Tel: 101.”