My son was given a bike by a neighbor kid who told my son he could have it my son said have it have it like forever, the kid said yes he did not ride it anymore. My son asked him again if he could have it have it and the kid said yes. My son had the bike for a week or longer. Another kid came to my son and told him he would give him $20 for the bike, my son said ok. now the dad of the neighbor boy is mad that he gave his bike away so he called the cops. My first problem is the cop talked to my son without my knowledge or presence, my son is 13. He told my son that it is against the law to sell property that was not his and my son told him that this kid gave him the bike. The cop said well that kid is saying he let you use it. There is no proof of the transaction that went on between these kids. They went to the other kids house who bought the bike off of my son and took it. Now the cop is telling my son he has to pay that kid back his $20. This is the way I feel. There is no proof that the neighbor kid owned that bike, it was not registered. I believe it was that kids mistake for giving his bike away. The kid that bought the bike approached my son and offered him the money and that was a mistake on his part for buying it. My son even told him who he got the bike from. Can anyone give me any advice before I talk to the police? Keep in mind this is just a boys bicycle not a motorbike or anything like that.