The Associated Press

CONCORD, N.H. - Tyco International Inc. said Monday that an exhaustive internal investigation into its accounting revealed no "systemic or significant fraud."

A long-awaited report to the Securities and Exchange Commission concluded that managers bent - but didn't break - accounting rules to inflate profits.

"Aggressive accounting is not necessarily improper accounting," it said.

The report said accounting errors that had been found and corrected were not material to the company's overall finances. The errors did prompt additional pretax charges of $382 million for the fiscal year that ended Sept. 30.

Tyco previously announced $2.8 billion in charges for the year, during which it lost $9.1 billion, or $4.59 a share. With the new charges, the loss was $9.4 billion, or $4.73 a share.

Tyco's accounting remains under review by the SEC, and several of former top executives, including chief executive Dennis Kozlowski, face criminal charges.

Tyco launched its own investigation after Mr. Kozlowski's abrupt resignation in June.

In September, the company told the SEC it had found tens of millions of dollars in unauthorized payments to dozens of employees.