Leeds defender fumed on the bench as Sweden lost to Germany.
Sweden have had mixed World Cup fortunes so far after their opening two games.
They lost 2-1 to Germany after winning their opener against South Korea, and the manner of the late defeat left a sour taste.
Substitute Pontus Jansson was left fuming on the bench after the game, seemingly upset by the German celebrations.
Jansson has explained his outburst, telling BBC Sport: “There was a lot of feelings. We had just let in a goal and lost the game, so it was pretty sour.
“They apologised afterwards so it’s just a case of accepting it. Obviously we’re angry and sad but we need to reload and do it in the next game.”
Sweden can still qualify for the knockout phase but they need to beat group leaders Mexico, and better Germany’s result against South Korea.
Jansson started Sweden’s first game but was back on the bench against Germany with Victor Lindelof recovering from illness.
An early exit for the Swedes would mean Jansson would return to pre-season earlier with Leeds, who have just begun their training under new manager Marcelo Bielsa.
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