The club said their details had been taken by Hampshire police after footage emerged apparently showing two fans making aeroplane gestures.
Sala's body was found after a private search commissioned by his family, financed by a crowdfunding campaign which attracted support from several leading soccer players.
The Air Accidents Investigations Branch (AAIB) said the search and rescue operation had been carried out "as dignified a way as possible" and the men's families were kept updated throughout.
Yesterday, Cardiff City played their first match since after Sala's body was recovered from the plane's seafloor wreckage.
The Geo Ocean III, which was involved in finding the wreckage, took the body back to the nearest port of Portland in Dorset, where the body was formally identified.
Storm Erik claims another victim but conditions could become more settled
It came after two men died in separate incidents on the roads in Devon and in Wales on Friday, the latter due to a falling tree. Shoppers courageous the strong winds and rain near St Paul's cathedral in central London.
"They'll all be reflecting on what's happened and your family is more important than football isn't it?"
The last few weeks have been extremely hard for Cardiff City after the disappearance and death of their new signing Emiliano Sala, who the Bluebirds broke their transfer record in order to bring to the club.
Warnock dedicated Cardiff's dramatic 2-1 win at Southampton to Sala and midfielder Aron Gunnarsson said the Argentine's death had "brought everyone together".
The occasion, however, was marred by a distasteful gesture made by two Southampton fans during the game.
"Such behaviour has no place in our game and will not be tolerated at St Mary's", read the statement from Southampton following the incident.