Paris Saint-Germain coach Thomas Tuchel suggested Jurgen Klopp was trying to deflect attention from Liverpool's Champions League loss by criticising the referee.
PSG midfielder Marco Verratti escaped with a yellow card for a rash challenge on Joe Gomez, while Liverpool were awarded a first-half penalty only after referee Szymon Marciniak appeared to initially signal for a corner.
Tuchel refused to be drawn on the matter, but said Klopp, like many coaches, may have been using the referee to keep the pressure off his team.