The formal announcement is that the government has granted the Swedish Prison and Probation Service's request to enter into a 20-year lease for 100 places of detention in Västerås.
It is about renting into the property that will be built new in central Västerås where the new police building will also be located.
Västerås has been without detention since 2015 when the old one was closed due to fire protection deficiencies.
Since then, detainees have been placed in other prisons around Sweden.
A new jail has been requested.
Among other things, when it takes resources from the police and lawyers who are allowed to travel longer distances to, for example, hold interrogations.
There has also been talk of poorer legal certainty, something the VLT, among others, reported on.
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The new police house in Västerås seen from Kungsängsgatan.
Photo: AG Architects