YouTube star Caleb Logan has sadly passed away of 'natural causes' at age 13, his family have confirmed.
Caleb's mother Katie announced the news on her Instagram page over the weekend.
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The teenager was part of The Brataley YouTube channel, along with his younger sisters, and had more than a million subscribers.
Since the US family started uploading videos in 2010 they have amassed over a billion views.
The family's Instagram page wrote of Caleb's death: "Yesterday at 7:08PM Caleb Logan Bratayley passed away of natural causes. This has come as a shock to all of us. Words cannot describe how much we will miss him. His incredibly funny, loving and wonderful spirit made us all fall in love with him as a YouTuber, friend, brother and son.
"We know you tune in to watch each day and eagerly anticipate new videos, but ask that you bear with us while we deal with this tragedy as a family. Please help us honor our, baked potato." The family also shared the last video made of Caleb before his death.
At the end of the clip a caption appears which reads: "Unfortunately Caleb passed away the day after this video was made. He will never get to meet his future self. None of us will and we are very sad because he would have been great. Please kiss your kids and tell them you love them every day. You never know what day will be their last."
Our thoughts are with Caleb's family at this difficult time.