NEW YORK -- The NFL has warned teams that it won't tolerate confrontational behavior toward replacement officials.
NFL.com said on Thursday night that senior league officials called owners, general managers and coaches from all 32 teams to tell them that respect for the game demands better on-field behavior.
NFL executive vice president Ray Anderson singled out Monday night's game for having examples of "unacceptable behavior."
He didn't specify which incidents in the Atlanta Falcons' victory over Denver crossed the line, but Broncos coach John Fox and defensive coordinator Jack Del Rio both had heated arguments with officials.
Anderson said, "We're not going to tolerate it."
He said flags, fines and suspensions are possible for coaches or players who crossed the line.
The NFL locked out the regular officials in June and contract negotiations have broken down.
Earlier on HuffPost:
Missed Call On Golden Tate
Foul Reporting Fail
Phantom Pass Interference Call
Wrong City, Ref
Missed Pass Interference Call
Back To The Camera Fail
Wrong Side Mix Up
Two Footballs On The Field
Steven Jackson's Missed Touchdown
49ers Get Extra Timeout
'Excuse Me For A Moment'
Ogeltree Slips On Hat
Touchdown or Interception?
Fantasy Football Ref
Too Much To Handle
Replacement refs were visibly overwhelmed when a scuffle broke out between players during a game against the Houston Texans and the Denver Broncos. Officials struggled to restrain players, and one referee was even on the <a href="http://www.huffingtonpost.com/2012/09/17/replacement-refs-monday-night-football-falcons-nfl_n_1892281.html?utm_hp_ref=nfl" target="_hplink">receiving end of a blow</a>.
Missed Helmet-To-Helmet Hit
Too Many Yards
Replacement refs awarded too march yardage when Jake Locker passed to Craig Stevens, who was hit with helmet-to-helmet contact by Lions linebacker Stephen Tulloch in OT. Officials mistakenly marked the penalty from <a href="http://www.huffingtonpost.com/2012/09/24/nfl-replacement-referees-bill-belichick-week-3_n_1909850.html?utm_hp_ref=nfl" target="_hplink">the wrong spot</a>.
Biased Ref Removed
Fox was assessed a 15-yard unsportsmanlike conduct penalty when he attempted to <a href="http://www.huffingtonpost.com/2012/09/02/replacement-referees-nfl-season-concerns_n_1850501.html?utm_hp_ref=nfl" target="_hplink">challenge a fumble</a> recovery by the 49ers.
Coin Toss Mix-Up
During a preseason game between the New Orleans Saints and Arizona Cardinals, the refs announced the result of the coin flip incorrectly.
After arguing with the referees who incorrectly ruled a 10-second runoff, Redskins' Kyle Shanahan was flagged for unsportsmanlike conduct. The ball was <a href="http://www.huffingtonpost.com/2012/09/24/kyle-shanahan-replacement-ref-tunnel-redskins_n_1909935.html?utm_hp_ref=nfl" target="_hplink">incorrectly placed</a> 25 yards back, when it should have only been 20.
Offensive Pass Interference
In Week 2 against the Eagles, Jacoby Jones was flagged for <a href="http://scores.espn.go.com/nfl/playbyplay?gameId=320916021&period=0" target="_hplink">offensive pass interference</a> on a 25-yard touchdown catch, which was widely <a href="http://www.cbssports.com/nfl/blog/mike-freeman/20208318/week-2-referees-horrible-week-for-the-replacements" target="_hplink">considered a horrible call. </a>
Week 1 Extra Timeout
In Week 1, the replacement officials mistakenly gave Seattle an extra timeout in the final minute. Fortunately for them, Arizona still won. <a href="http://www.nfl.com/news/story/0ap1000000060267/article/refs-timeout-ruling-in-seahawkscards-game-wrong" target="_hplink">The officials admitted their mistake</a>