Suicide threat in pre-game lobby

A player I was just in game with told the team that they would be committing suicide and they wanted to spend their last hours playing League. I offered to talk to the person and I gave them the number for the suicide hotline but they told me that they had made up their minds. I dodged the game and made a support ticket. Is there anything else I should be doing? I wanted to make sure my report got in front of someone's eyes at Riot before it's too late.
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