A 53-year-old man has been arrested after a car hit a number of pedestrians in Liverpool city centre during Liverpool's Premier League victory parade.
Eyewitnesses and videos shared on social media have shown the vehicle driving through a crowd as people scatter. Police say they are not treating the incident as terror-related.
"We were contacted at just after 18:00 today, Monday 26 May, following reports a car had been in collision with a number of pedestrians on Water Street.
"The car stopped at the scene and a male has been detained."
Police later said a white British man from the Liverpool area had been arrested and that he was believed to be the driver.
27 people had been taken to hospital for treatment, with two, including one child, seriously injured. Another 20 people were treated for injuries at the scene.
Four children were among the injured. Four people including a child were lifted from beneath the car, Merseyside fire chief Nick Searle said.
Liverpool City Region Mayor Steve Rotherham told the BBC a day of "absolute celebration" had been "overshadowed" by the incident. He urged the public to avoid speculation while police continue their investigation.
Prime Minister Sir Keir Starmer posted on X: "The scenes in Liverpool are appalling - my thoughts are with all those injured or affected.
"I want to thank the police and emergency services for their swift and ongoing response to this shocking incident."
Liverpool FC said it was in contact with the police and its "thoughts and prayers are with those who have been affected by this serious incident", while rivals Everton FC echoed the sentiment.
The Premier League has also released a statement, saying "everyone at the Premier League is shocked by the appalling events in Liverpool this evening, and our heartfelt thoughts go out to all those injured and affected.