Thames Valley Police is appealing for witnesses following an incident of grievous bodily harm in Milton Keynes.
The incident happened at around 11pm in the car park on Walker Avenue, Wolverton Mill on Wednesday 4 January.
The victim, a man in his forties was found stabbed several times in the torso and once to the face after a man got into his vehicle.
The victim was treated in hospital for his injuries and has since been discharged.
Detective Inspector James Horseman, based at Milton Keynes police station, said: “We are appealing to anyone who may have witnessed this incident, or who knows anything about what happened, to please come forward.
“We would also like to appeal to residents of Wolverton Mill Estate that have residential CCTV who have not been spoken to by police to review their footage from around the time of the incident.
“We would also like road users who may have dash cam footage of their journey between Wolverton Road & Stratford Road between 11pm and 11.30pm last Wednesday (4/1) to get in touch.
“If you have any information please call 101 or make a report online quoting reference number 43230005378.”