Newspaper executives say they're willing to change newsprint suppliers or seek overseas paper sources in response to another boost in North American newsprint prices, which they claim is unjustified.

Their reaction follows reports that major Canadian newsprint makers, which supply most U.S. newspapers, are raising prices to $695 a metric ton from $650 on Jan. 1.Bowater Inc., the largest U.S. newsprint producer, was the latest to notify customers Thursday.

Newspaper executives say demand for newsprint is down dramatically due largely to a fall in retail advertising and the planned 6.9 percent increase therefore is not warranted.