Liability as joint owner of checking account.

When my stepson was under the age of 18 I helped him open a checking account by becoming a joint owner of the account, as required by the bank. I failed to remove my name from the account after he reached the age of majority and moved out of the house. He since wrote a check in the amount of $600 for which he had insufficient funds. The check was covered by Tele-Check who now claims I am liable because I was listed as joint owner of the account at the time he wrote the check. They are threatening action against me personally.

He wrote the check after reaching the age of majority and becoming emancipated. Am I liable for paying the amount of the check? Any advice would be greatly apreciated...

My response:

Already answered here, in the duplicate post :

https://forum.freeadvice.com/showthread.php?postid=215670#post215670

IAAL