The NFL is investigating another possible controversy involving the New England Patriots, this time whether they intentionally deflated footballs during their 45-7 victory over the Indianapolis Colts in Sunday’s AFC Championship Game.

A league spokesperson confirmed the investigation, which was first reported Sunday night by television station WTHR in Indianapolis.

Patriots quarterback Tom Brady seemed amused when asked Monday morning about the report.

“I think I’ve heard it all at this point … it’s ridiculous,” Brady said during his weekly interview with Boston radio station WEEI. “That’s the last of my worries. I don’t even respond to stuff like this.”

An under-inflated football could potentially be easier to grip and catch. NFL rules stipulate that footballs must be inflated between 12.5-13.5 pounds per square inch and weigh between 14 and 15 ounces.

NFL vice president of officiating Dean Blandino told NFL AM on Monday that “it’s not unheard of for a ball to be removed from circulation and then tested during the week for whatever issue there was.”

Former NFL official Jim Daopolous explained to ESPN the process in which footballs are managed. He said that two hours and 15 minutes before each game, officials inspect 12 footballs from each team and put a mark on them to indicate they meet the proper requirements and are good for usage. Then those footballs are given to the ball attendant. There also is a second set of six footballs, used specifically for the kicking game, which are marked appropriately and remain in the possession of officials at all times.

“Officials check balls as they go into the game, and if the ball doesn’t feel perfect, they can throw it out,” Daopolous told ESPN. “There is always the possibility that balls can lose air due to the conditions.”

In 2008, the Patriots were heavily fined and docked a first-round draft pick for what is now known as “SpyGate.”