Lazio coach Simone Inzaghi and Fiorentina boss Beppe Iachini are under investigation for using blasphemous phrases.
Inzaghi is a repeat offender, as he was already accused twice this season and managed to take a plea bargain with a fine.
The coach had been self-isolating at home for almost three weeks due to COVID-19.
It seems the frustration had built up, because he was heard uttering a blasphemous phrase during the 3-0 win over Milan on Monday evening.
Fiorentina coach Iachini is also under investigation for phrases he used during the 1-1 draw with Juventus.
Blasphemous phrases are considered the worst type of swearing in the Italian language and are therefore punished with fines or even a ban.
With games played behind closed doors, it has become far easier to identify those who break the rules of conduct.