South Wales Police is investigating the death of a 50-year-old man in Maes Y Darren, Ystalyfera.
Emergency services were called on Sunday at about 10.35pm to man with injuries.
A 48-year-old man and a 38-year-old woman have been arrested on suspicion of murder.
We are appealing for anyone who may have been in the area of Maes Y Darren or seen people in the area between 6-10.45pm on Sunday.
Anyone with information or any dash cam footage should contact 101 or Crimestoppers on 0800 555 111 quoting occurrence 11900257001