Police are investigating after an elderly man was found dead outside a property in Glynneath.
The 73-year-old's body was found on the afternoon of January 27, near the Pontwalby Viaduct.
A 28-year-old man has been arrested in connection with the incident and is being questioned by officers.
South Wales Police is appealing for anyone who may have seen anything or anyone acting suspiciously in the area between 3.30pm and 7.50pm.
South Wales Police is investigating the death of a 73-year-old man whose body was discovered outside a property near the Pontwalby Viaduct in Glynneath yesterday afternoon.