Radiocor reports on the matter
The report says that the commission has sent a letter to the Italian government requesting for clarification on violation of debt-reduction rules for 2018. It is said that Italy has been given up until Friday to respond to the matter.
In case you missed the headlines from earlier in the week, the commission is said to possibly consider a fine on Italy worth around ~€3.5 billion on this issue.
Knowing the incumbent Italian government, this request is likely to fall on deaf ears. Even if they do answer to it, it won't be what the European Commission is looking for.