The directors of the latest Avengers film have pleaded with fans not to reveal plot details after some footage and images reportedly leaked online.
The leaked footage appeared on social media this week before being removed.
Avengers: Endgame is a follow-up to last year's Avengers: Infinity War.
Endgame sees the surviving heroes, including Robert Downey Jr's Iron Man and Chris Hemsworth's Thor, embark on a mission to "avenge the fallen".
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