(SportsNetwork.com) - Eleven of the 12 football allotted to the New England Patriots for Sunday's AFC Championship Game were under-inflated, according to a report.

Citing league sources close to the NFL's investigation, ESPN.com reported the 11 balls were each under-inflated by 2 pounds of air pressure.

"We are not commenting on the matter at this time," NFL spokesman Michael Signora told SportsNetwork.com in an email late Tuesday evening.