The picture of an Israeli flag was taken outside the Hamad Aquatic Center (Aspire) where the FINA Swimming World Cup took place on October 20 and 21.
Sara AlDisi, who tweeted the picture, said that Qataris and residents where seriously shocked when they saw the tweet.
According to Sara, Israeli swimmers were "secretly" participating in the swimming world cup: "Qatar Olympic Committee made sure to never mention Israeli when listing countries in news."
She said some people where shocked because the flag was so boldly put up both outside and inside Hamad Aquatic Center. According to her, this never happened even though Israelis came here before.
What do you think? Here is the tweet: