Merseyside Police are appealing for video footage after a police officer was run down by a van in what investigators believe was a deliberate attack.
The man sustained serious injuries on Saturday night (25 November) when the white Ford Transit van he and two colleagues were attempting to stop instead careened into him.
His injuries are not thought to be life threatening but are being described by Merseyside Police as serious. He has also been left "extremely shaken" by the incident, the force said, adding how his colleagues have been left shocked by the ordeal.
Mayor Joe Anderson took to Twitter to condemn the attack: "A police officer was seriously injured, after attempt to kill him by someone driving a car directly at him in Norris Green last night.
"Our police risk their lives for us every day. Our city thanks you, our thoughts are with you and family."
DCI Martin Earl of Merseyside Police said: "This was a despicable attack on a police officer who was simply doing his job, trying to protect the communities of Merseyside.
"The officer has sustained serious injuries for which he is receiving treatment. He has also been left extremely shaken by his ordeal.
"His colleagues, both those who were with him at the time and others who attended following the incident, have been left shocked by this incident and are being provided with support."
"I would urge anyone with information about this incident, or who may have been passing Hasfield Road in their vehicle at the time and may have dashcam footage, to contact police. Any information could prove vital to our inquiries."