Confession of a player playing TFT with two different accounts at the same time

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Today I came across a player in TFT ranked, playing with two different accounts with the same name (It hurts to live vs lt hurts to live - first letter is L) at the same time. In the chat, he confessed that he is playing with two computers and the comps he played are totally different. The confession of the player is in chat that RIOT could read I suppose. Is it normal or would there be any regulations after reporting or what should I do?? I reported both accounts but don't know other players
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