She also said the police were not searching for anyone else involved in the case, but declined to provide any details about what might have prompted the crash. Four of those were children, the North West Ambulance Service said, including one with serious injuries. Overall, a total of 27 people were taken to four hospitals by ambulance, officials said, adding that 20 others were treated at the scene, and more were showing up at local emergency departments with injuries. Officials did not identify any of the victims. Liam Robinson, a member of the Liverpool City Council, said at the news conference that the episode had “cast a very dark shadow on what’s been a joyous day for the city,” and pledged to provide more information when “it’s appropriate to do so.”