So a family member bought car. The seller provided a fake v5c logbook, only the person realised afterwards as they tried to come and tax the vehicle. The reference from the v5c isn’t working. At this point we didn’t think it was stolen. I checked HPI clear no stolen

We applied for v62 , after month delay send the letter to provid the pictures of the car with vIN number of back and forth with all the pictures everything provided, they finally I got the v5C , then after I sold the car for need the money , after few days I got the letter from DVLA said the inspection team we’ll contact you for the car but I already sold the and transferred to the person who bought it , so today the person send the message said the police is coming don’t worry , I sold the car legally with v5C on my name , any advice what should I do please ?