He made the announcement after meeting with Libyan foreign minister Mohamed Sayala in the Libyan capital.
The credentials of the Italian ambassador to Libya will be presented on Tuesday, Minniti said in a press conference following the meeting.
The Italian official said he discussed with the unity government a number of issues of mutual concern, especially stability in Libya and the fight against terrorism.
Minniti also stressed the importance of Italian-Libyan relations, especially in the economy and services fields.
At the press conference, the Libyan foreign minister said the two officials have agreed on plans concerning the fight against illegal immigration and human trafficking, as well as the fight against smuggling fuel from Libya to Italy by sea.