He posted on social media saying: "My family and I are shocked and devastated.
You'll never walk alone."
Reports first emerged at around 6pm UK time that a car had ploughed through a crowd of people at Water Street in the city center, with emergency services acting quickly to deal with the serious incident.
Merseyside Police later confirmed a 53-year-old white male was arrested at the scene and is believed to be the driver.
Police are not searching for anyone else in relation to the crash, and it is not being treated as a terrorist incident.
There will be more to follow on this breaking news story and Liverpool.com will bring you the very latest updates, pictures and video as soon as possible.
Please check back regularly for updates on this developing story as they happen.
Follow @?Liverpoolcom_ : The official Liverpool.com account for all the latest sports news as it happens in real time.
Follow us on Facebook or visit Liverpool.com homepage.
Click to visit Liverpool.com | Click to return to LFC Live.net