NFL Commissioner Roger Goodell has asked the league's powerful competition committee to look into how games are officiated, and the size of the rule book.
Goodell says Wednesday that team owners at their meetings discussed the officiating, which is an "integrity of the game" issue.
He has asked the competition committee to look into clarifying and simplifying the rules, as well as how the league trains officials. Goodell says "no stone will be left unturned" in examining and improving officiating.
While saying he believed game officials did a good job, Goodell adds it's important for the NFL to look into using technology for improving officiating. He also said the league has hit a stumbling back with the officials' union over full-time officials.
The NFL has been plagued by missed or erroneous calls in games this season.