A video has been shared of an Egypt Air stewardess pouring juice from a used cup back into a bottle inducing much anger online.

The footage was shared on Facebook by Amany Nady, a passenger on the flight.

After outrage expressed online, Egypt Air officials responded by saying they have launched a thorough investigation into the incident.

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They added, "The stewardess seen in the footage was following new regulations, disposing of the liquid back into its original packaging in order for it to be later discarded.

"She was certainly not going to use that same bottle to serve passengers again.”