Police are appealing for witnesses following a hit and run collision in Livingston which took place around 4.15pm on Monday afternoon.
A marked police vehicle signalled a red Citroen C3, travelling southbound, to stop on Ladywell Road around 4.15pm.
The Citroen failed to do so and officers initiated a pursuit which concluded at Carmondean Centre roundabout.
The Citroen continued onto Deans North Road and struck a pedestrian.
Officers provided first aid to the man and the attendance of the Scottish Ambulance Service was requested.
The 54-year-old was taken to the Edinburgh Royal Infirmary with serious, but thankfully non life-threatening, injuries.
The Citroen has continued towards Eliburn Roundabout and then struck a Ford Fiesta and a Lexus travelling in the opposite direction.
The Citroen has come to a stop shortly afterwards and the driver left the scene.
This incident is currently being treated as attempted murder and officers are following a positive line of enquiry in connection with this.
Detective Inspector Paul Batten of Livingston CID said: “An extensive investigation into this incident is currently underway by both detectives and officers from the Road Policing Unit and we’ve already spoken to a number of people as part of our enquiries.
“However we’d urge anyone who may have seen the Citroen travelling in the area beforehand, who witnessed the pursuit or saw the collisions take place, or those who saw the Citroen come to a stop and anyone leaving the vehicle get in touch with us as soon as possible.
“As is standard procedure when there has been police involvement or contact prior to a serious incident such as this, the circumstances of this collision have been referred to the Police Investigations & Review Commissioner.”