Four people were taken to hospital after a crash which left a man fighting for his life.
Police and paramedics were called to reports of the crash at the junction of Rolleston Drive and Malpas Road in Liscard, Wirral at around 8.15pm on Saturday, January 29.
Merseyside Police said the crash involved a blue BMW and a grey Vauxhall Zafira.
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One man, who was the passenger in the BMW, was taken to hospital with serious head injuries where he remains in a critical condition.
The male driver of the BMW was taken to hospital with minor injuries.
Two men, who were travelling in the Vauxhall Zafira, were also taken to hospital with serious injuries that are not believed to be life threatening.
Rolleston Drive and Rosclare Drive were closed after the crash while emergency services worked at the scene.
The roads have since been reopened but officers are continuing CCTV and witnesses enquiries in the area and anyone with any information is asked to contact police.
Sergeant Simon Duffy of Roads Policing Unit said: “We are in the early stages of an investigation into a road traffic collision that happened last night and has left three men seriously injured in hospital.
“If you witnessed the collision on the junction of Rolleston Drive and Malpas Road or were driving past at the time and have any dashcam or CCTV footage, please review it and get in touch. Any information you hold could be vital to our enquiries.”
Anyone who witnessed the incident or has any information is asked to call our Matrix Roads Policing Unit on (0151) 777 5747, email SCIU@merseyside.police.uk, or DM @MerPolCC on Twitter quoting reference 22000070255.