The Argentinian football player was killed in the crash on January 21, 2019.
Swansea City have condemned the image and said they will support police with investigations.
The 28-year-old footballer died when a private plane crashed into the English Channel earlier this year.
Sherry Bray and Christopher Ashford accessed footage of the post-mortem examination being conducted on Sala's remains.
Emiliano Sala And Pilot Were Exposed To Harmful Levels Of Carbon Monoxide In Cockpit Of Crashed Plane
The footballer and pilot David Ibbotson were both killed in the crash in the English Channel on January 21.
An image that appeared on social media purported to show the footballer's remains during a post-mortem examination.
The Cardiff City footballer died after the plane he was travelling in crashed into the English Channel in January.
The Argentinian striker died in a plane crash in January.
It comes just days after the death of the footballer's father.