He said he did it because he was scared...

to tell us the truth. Gabe had taken his brand new Gameboy DS case to school on Friday for show and tell, it had one game in it, he did not bring it home on Friday, or Monday and this morning I reminded him to remember to bring it home tonight...he still "forgot" we said we were going to call the school and talk to his teacher, he then confessed that he lost it on Friday somewhere between school and home...we can't exactly get a straight answer out of him...when we asked him why he didn't tell us sooner, he said he was scared to tell us. What should we do, is this something that should be punished for? He kept his secret for almost 5 days from us...