Britain's health minister has said the government will change the law to enforce the local lockdown in Leicester.
Tough restrictions have come into force in the city following a surge in the number of coronavirus cases.
Health Secretary Matt Hancock said Leicester's seven-day infection rate was 135 cases per 100,000 - three times that of the next highest city.
He said the measures would be kept under review and would not stay in place "any longer than is necessary", adding: "We'll review if we can release any of the measures in two weeks."
The city's mayor Peter Soulsby said: "These measures are stricter than we anticipated but we understand the need for firm action.
"I am determined that we will make this work and to minimise the time these additional measures need to be in place in the city."
Mr Hancock said "in some cases" the lockdown would be enforced by police, while legal changes would be made so non-essential retail is no longer open.
When asked how people would be stopped from travelling outside the city, he said: "We're recommending against all but essential travel both to and from and within Leicester, and as we saw during the peak, the vast majority of people will abide by these rules.
"Of course we will take further action including putting in place laws if that is necessary but I very much hope it won't be."
The Chairman of a GAA club in Leicester has said they are 'surprised' the city is facing a second coronavirus lockdown. However Mick Walker said that the safety of players is most important and if they have to wait to return to play they will | Read more: https://t.co/w1DXg6HA1L pic.twitter.com/392n4YhIk8— RTÉ News (@rtenews) June 30, 2020
The chairman of a GAA club in the city has said that the return to lockdown has come as a "surprise".
However, Mick Walker told RTÉ News that the safety of players is most important and if they need to wait longer to return to the playing field, so be it.
Naomh Padraig GAA club fields four juvenile sides, as well as adult sides for men and women, at the Emerald Centre in the city.