Hayes Grier has been hospitalized.

The Internet sensation, who is one of the most popular stars in Vine, got into a serious accident yesterday while riding his dirt bike.

News of the crash and of Grier’s tenuous condition was first made public in a Tweet by his brother, Nash Grier.

“Just got a call on set that said Hayes was in a crash. He’s now in the hospital,” Nash tweeted to his 5.63 million followers, adding the hashtag “#PrayForHayes” to his message.

It didn’t take long for this hashtag to go viral.

In follow-up a series of follow-up Tweets, Nash kept fans as informed as he could be, writing of his sibling:

“He can move & talk (thank god) but he’s coughed up a lot of blood. That’s all I know. Praying he has a quick recovery.

“Damn I hate hearing s–t like that on the phone, scared me to death.”

About an hour later, Nash actually shared a screenshot of a text exchange (which he captioned with “Phew”) with more specific news regarding Hayes’ health.

It’s unclear who was on the other side of the exchange, but it appears to be someone at the hospital and it reads as follows:

“Your brother is pretty busted up right now. Luckily no major stuff. All scans came back negative for any internal bleeding.

“He does have a concussion, fractured top two ribs and bruised lung on one side. He is in a lot of pain.”

Hayes Grier is only 16 years old.

But he sky-rocketed to Internet fame due to his Vine and YouTube videos.

At he moment, Grier has 3.53 million Twitter followers… 5.3 million Instagram followers… 4.4 million Vine followers … and 848,000 YouTube subscribers.

He competed on Season 21 of Dancing with the Stars.

He was the second-youngest contestant to ever appear on the show and he teamed with Emma Slater to reach Week 7.

A few hours after news of Grier’s crash went public, a rep for the famous teenager released the following statement to Us Weekly:

Earlier today, Hayes Grier was involved in a dirt bike accident and immediately transported to a local hospital.

Hayes suffered a concussion, broken rib, bruised lung, and multiple skin lacerations.

Thankfully, he is OK and currently resting and recovering in the hospital surrounded by his family, where he will remain for the next few days.

We can’t thank you all enough for the outpouring of prayers and support for Hayes!