A teenager has been taken to hospital and a security guard injured during chaotic scenes surrounding two YouTube stars in north Sydney this morning.

The 14-year-old boy, who was among thousands of fans on Denison Street, suffered serious head injuries after falling backwards down a set of stairs.

Ray Hadley was critical of the rowdy crowd, which had gathered outside Nine Entertainment headquarters to catch a glimpse of Logan Paul and KSI.

Press PLAY below to hear Ray Hadley’s comments in full 

A security guard monitoring the scenes was thrown to the ground and caught behind a cement barrier when a promise of free samples of the duo’s energy drink, Prime, caused a surge.

“You can’t believe that many people have that much spare time on their hands that they can gather in Denison Street … to get a free bottle of energy drink,” Ray said.

“They weren’t there to win Lotto, they were going to get a free bottle or pack of energy drink.”

The duo arrived in Sydney after Paul’s meet-and-greet appearance at a Perth Woolworths was cancelled due to “safety concerns”.

Aussie fans are crazy for Prime man pic.twitter.com/lQGkOr0MKb

— ksi (@KSI) February 12, 2023

“This is lunacy,” Ray continued. “Karl, what are you doing among all this, mate?

“I mean, fair dinkum, now we’ve got a kid transported to hospital, we’ve got a security guard in strife, also injured.

“Has the world gone completely mad, or I’ve just gone mad? It will take smarter minds than mine to figure this one out.”

Press PLAY below to hear more on Logan Paul’s storied past 

Image: Today