The Premier League has issued the following statement:
"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.
"We have been in contact with Liverpool FC and have offered our full support following this serious incident."
This follows a statement from Liverpool FC, which read: "We are in direct contact with Merseyside Police regarding the incident on Water Street which happened towards the end of the trophy parade earlier this evening.
"Our thoughts and prayers are with those who have been affected by this serious incident.
"We will continue to offer our full support to the emergency services and local authorities who are dealing with this incident."
