This story does seem a bit dodgy, I have to admit. What did the boy eat for 15 days, or where did he go to the toilet ? Why didn't the specially trained police dogs find him when they were brought into the house to search for him ?
Its not really believable that this boy was hiding behind some boxes for 15 days, for reasons I have already given...the truth will come out later, as it always does. Poor lad...I hope his Mum looks after him.