At least, 16 million people have been under quarantine in Italy, as the nation battles the deadly Coronavirus disease.
Coronavirus surges on in Italy with hundreds dead already, crippling economic activities.
Anyone living in Lombardy and 14 other central and northern provinces will need special permission to travel. Milan and Venice are both affected.
Prime Minister Giuseppe Conte also announced the closure of schools, gyms, museums, nightclubs and other venues across the whole country.
The measures, the most radical taken outside China, will last until 3 April, BBC reports.
Italy has seen the largest number of coronavirus infections in Europe, with the number of confirmed cases jumping by more than 1,200 to 5,883 on Saturday.
Among the latest people to test positive is the army’s chief of staff. Salvatore Farina said he felt well and was self-isolating.
The strict new quarantine measures affect a quarter of the Italian population and centre on the rich northern part of the country that powers its economy.
The death toll in Italy has passed 230, with officials reporting more than 36 deaths in 24 hours.
The health system is under immense strain in Lombardy, a northern region of 10 million people, where people are being treated in hospital corridors.
“We want to guarantee the health of our citizens. We understand that these measures will impose sacrifices, sometimes small and sometimes very big,” Prime Minister Conte said as he announced the measures in the middle of the night.