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A BMW abandoned outside a pub is believed to have been deliberately set on fire after a crash.
Police are searching for witnesses after the fire in Lamberhurst on May 10.
The blaze destroyed the black 4 Series model, which had been left outside a pub in Furnace Lane on the evening of May 10.
It is believed that before the arson, the BMW may have collided with another vehicle in the Lamberhurst area, possibly a red Citroen.
The collision was not reported to Kent Police and officers are urging the driver or any occupants of the Citroen to contact them.
Sgt Jonathan Hannan of the Tunbridge Wells Local Policing Team said: "We suspect that the BMW was set alight following an earlier collision in Furnace Lane, at a location where the road has traffic calming measures.
"It is believed a man and a woman were inside this second vehicle and it is important that we speak to them as soon as possible.
"We would also like to hear from anyone who may have seen the BMW being driven in the Lamberhurst area between the hours of 7pm and 9pm on this evening, or who noticed any other suspicious activity."
Two men were arrested on May 10 and 11 in connection with driving while over the legal alcohol limit and with perverting the course of justice. Both were released, pending further investigation.
Anyone who can assist the investigation is asked to contact Kent Police on 01622 604100, quoting reference 46/79176/21.
You can also contact Crimestoppers anonymously on 0800 555111 or by using the online form on their website.