First: Hot Pursuit
We'd also have to look at the Massachusetts version of an "Emergency Powers" act- The Governor can call it an emergency, and then a lot of stuff CAN
go out the window.
Additionally, through some legal wrangling- most likely as part of the Governor's emergency powers, a curfew could be instituted. While an adult curfew would fall under strict scrutiny- if you check that against the hot pursuit definition above, they've got a fairly hefty club to swing when they tell the judge our compelling government interest was to capture a multiple-homicide suspect who was armed and dangerous with firearms and improvised explosive devices thought to be "cornered" in a discrete area..
And finally, don't forget there is no prohibition against the police lying- barring being under oath.