Cumbria Police are appealing for information as part of an investigation into a serious road traffic collision which occurred in Carlisle.
The incident occurred at approximately 4pm yesterday (Monday 2 May) on Stanwix Bank.
The collision involved a white Mercedes A45, a blue BMW 320d and a black Fiat Punto. All three vehicles were travelling in the direction of the city centre.
The driver of the Mercedes, a man aged in his 50s from Carlisle, was taken to the Royal Victoria Infirmary in Newcastle with life-threatening injuries. He remains in a critical condition.
The driver of the BMW, a 52-year-old man from Cleator Moor, was arrested on suspicion of dangerous driving causing serious injury. He remains in custody at this time.
Both the driver of the BMW and a passenger in the Mercedes were taken to the Cumberland Infirmary with minor injuries.
Collision investigation officers are appealing to anyone who may have witnessed this incident to get in touch. They would also like to hear from anyone who may have dashcam or CCTV footage.
Anyone with information can report information online at www.cumbria.police.uk/report-it, quoting incident number 162 of 2 May. You can also email SCIU@cumbria.police.uk with information you may have in relation to this incident or call 101.