Prime Minister Keir Starmer has said, "the whole country stands with Liverpool," after what happened on Monday evening.
He posted on social media: "I want to thank the police and emergency services for their swift and ongoing response."
Conservative leader Kemi Badenoch also gave her . "My thoughts are with all those affected," she said.
Speaking to the BBC, Liverpool City Region Mayor Steve Rotheram said a day of "absolute celebration" had been "overshadowed" by the incident.
Both Liverpool and Everton FC have showed their in online statements, and former Liverpool manager Jurgen Klopp has said via Instagram: "My family and I are shocked and devastated. Our thoughts and prayers are with all those who are injured and affected. You'll never walk alone."
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