Caleb Logan from the famous YouTube family the Bratayleys died this week.
It was said at the time that the 13-year-old died of “natural causes”.
The family have now confirmed, in an additional Instagram post, that Caleb died of an “undetected medical condition”.
“Caleb’s death has raised many questions about how and why this could happen to a seemingly healthy boy,” they said in the post.
“Sadly, tests have confirmed today that Caleb passed away from an undetected medical condition. We’ll have more definitive answers in the coming weeks but ask that you help us celebrate his life instead of focus on his death.”
Due to an outpoure of support and grief from fans, the family live-streamed yesterday’s memorial ceremony.
LIVE on #Periscope: Caleb's Memorial Service https://t.co/Ddfll8LYw0
— Bratayley Bratayley (@Bratayley) October 6, 2015
LIVE on #Periscope: Caleb's Memorial Service https://t.co/kIti5uY9PT
— Bratayley Bratayley (@Bratayley) October 7, 2015
The Bratayleys have more than a million subscribers on YouTube where they vlog their day-to-day lives.