Dolan twins opening night of 4OU tour halted after crush

Emergency services were called to the opening night of the Dolan twins' world tour.

The YouTubers kicked off their 4OU Tour in New Jersey by taking their shirts off resulting in fans pushing to the front and some even fainting.

It meant the show had to be stopped while medical assistance was given.

Ethan tweeted: For every beautiful fan out here at the show in NJ.. Please be seated and relax and breathe. We're all a fam. We want the show to go on

A fan uploaded what happened on Instagram.

Jersey Shore University Medical Center confirmed to Newsbeat they treated fans from the arena with one being sent to hospital.

Ethan and Grayson Dolan are 16 and have been YouTubers for the past two years.

They film pretty much everything about their lives and upload it online.

The brothers have amassed millions of followers on YouTube, Vine, Snapchat and Instagram.

iPlay America, where the concert was being held, posted a statement online about the event.

Some have posted online that they saw people "crying" and "in pain".

The brothers tweeted after the show his thanks to fans.

Grayson posted: 4ou fans are THE BEST fans in the world. Can't tell you how grateful I am to have you all supporting us.

Ethan wrote: I never smile with my teeth, but I don't think I smiled withOUT my teeth at all tonight. You make me happy, thanks for that .

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