The club's statement relating to the matter was very brief and revealed no further details on the matter, but rumours suggest that it is do with the 25-year-old's social media conduct.
The statement read: "Leeds United can confirm that Ryan Hall has been suspended from the club pending an investigation into a disciplinary issue.
"No further comment will be made at this stage."
The suspension could relate to tweets that Hall sent about earning as much money as you can from football even if you're not getting picked to play.
Hall recently spent a month on loan at struggling League One side Sheffield United.