Caleb Logan Bratayley, a member of the popular YouTube family Bratayley, has died at the age of 13.

The family announced the news on their Instagram page Friday. "Yesterday at 7:08PM Caleb Logan Bratayley passed away of natural causes," the caption next to a picture of the teen and one of his sisters read.

"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," the post continued.

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Maker Studios, the company that represents Caleb, released their own statement, saying, "We are heartbroken at the tragic loss of Caleb from Bratayley, a beloved member of the Maker family. Our love, support, thoughts, and prayers are with the Bratayley family."

The family-of-five's videos first became popular in 2010, and have since amassed over one billion views in five years, according to Variety.

On Sunday, the family posted a video titled, "Caleb, Gone But Never Forgotten," which showed some of his most memorable moments.

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Our thoughts are with the entire Bratayley family as they mourn this devastating loss.