Avengers fans have brutally beaten a man outside a cinema after he shouted spoilers at people waiting to see the film, according to reports.
Avengers: Endgame is the culmination of a story that spans 11 years and 22 Marvel movies, and has caused unprecedented anticipation amongst movie fans.
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But a group of Hong Kong cinemagoers waiting to see the film had their experience ruined after a man who had just seen it revealed the surprise ending.
According to Taiwanese media, the enraged fans beat him mercilessly until the pavement was splattered with blood.
An image posted to social media shows the man sitting on the ground after the assault and receiving medical attention.
The photo has ignited discussion with some reportedly saying it "felt good seeing this" while others insisted "he got his just desserts served".
Engame's directors, the Russo Brothers, have posted an open letter pleading for fans to stop ruining the plot for others.
"To the greatest fans in the world, this is it. This is the end," it read.
"The end of an unprecedented narrative mosaic spanning 11 years and 11 franchises.
"When you see Endgame in the coming weeks, please don't spoil it for others, the same way you wouldn't want it spoiled for you."