NORWALK - Accounting firms and post offices around southwestern Connecticut and beyond were crowded with procrastinators who waited for the last day to file their annual tax returns.

In Stamford, a long line of last-minute filers formed outside the post office on Camp Avenue, waiting to get the April 15 post mark.

Many of the people in line say they waited for the last day because they owed money to the Internal Revenue Service and wanted to file an extension.

However, officials at the Norwalk branch of the tax services provider H&R Block say the extension does not apply if a person owes money.

"If you owe money, then you owe money as of April the 15th, so the extension doesn't forgive your liability to the IRS," says Saul Estreicher, of H&R Block.