In total, irregularities were found in 242 structures, investigators said.
In particular, a reported 48 percent of inspected restaurants, especially in “all you can eat” venues, did not meet the required criteria.
Twenty-two such establishments were closed, 477 law violations reported and 128 tons of food seized in the operation, investigators said.
The crackdown on ethnic restaurants, comes after the Italian Council of Ministers authorised a new security decree drafted by Interior Minister Matteo Salvini.
The Security Decree will give intelligence and police services powers to wiretap and use undercover operatives to combat illegal people traffickers. It will also restrict the operations of pro-immigration NGOs in the country.
The Italian government will be able to seize vessels from civil society groups which violate Italian government sanctions or that attempt to illegally enter Italian territorial waters with illegal migrants, Il Giornale reported.
The new decree follows other measures that was passed last year, which included scrapping humanitarian residency permits for migrants as well as funding deportations of illegal migrants.
The prior legislation also focused on far-left activities and Roma squatters, allowing the Italian state to revoke the citizenship of those who have engaged in illegal and terrorist activities.