Kylie Jenner has not been injured after attending the Travis Scott concert that left at least eight people dead.
The rapper was performing at his Astroworld Festival in Houston on Friday when a crowd surge caused the mass casualty event.
Kylie - who shares Stormi and is expecting another baby with Travis - and her sister Kendall Jenner were at the concert.
"Everyone is shocked and upset," an insider told PEOPLE. "Kylie and Kendall were in the audience, but they are not injured.
"Travis won't be performing tonight. The concert is cancelled."
Mirror have contacted Kylie's reps for comment.
Houston Fire Chief Sam Pena confirmed eight people died from the event.
"We had at least eight confirmed fatalities tonight," he said in a statement. "Eight confirmed fatalities and we had scores of individuals that were injured here at this event
"We had an attendance of approximately 50,000 to the Travis Scott Astroworld Festival event."
He added: "What we do know is that at approximately 9 o'clock, 9:15, the crowd began to compress towards the front of the stage and that caused some panic and it started causing some injuries.
"People began to fall out, become unconscious, and it created additional panic."
It was reported that at least 17 people were injured, with 11 of them suffering a cardiac arrest.
Travis was filmed begging security guards to help a fan who collapsed during his concert.
He halted his set in Houston, Texas, to ask the security for help after the crush was thought to have injured hundreds of people.
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In the video shared on social media, he is heard telling someone: "Somebody help him, somebody has passed out right here!
"Don't touch him, don't touch him. Everybody just back up. Security, jump in real quick.
"Somebody jump in. Come on, come on!"
Festivalgoers have described the chaos as people surged to the front, with footage showing fans dancing on ambulances trying to reach those hurt.
Witnesses have said that the rapper stopped his show several times to ask security to help fans.
In a statement, Astroworld said: "Our hearts are with the Astroworld Festival family tonight. We are focused on supporting local officials however we can."
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