LONDON (AP) — Britain's Supreme Court is to give its verdict Tuesday on legality of Prime Minister Boris Johnson's five-week suspension of Parliament.

Britain's highest court plans to announce the decision Tuesday at 10:30 a.m.

It is deciding whether Johnson acted improperly by shutting down Parliament for five weeks during the period before Britain's Oct. 31 Brexit deadline, when the country is scheduled to leave the European Union. The topic has deeply divided British politicians as well as the public.

The government says the decision to suspend Parliament was routine but activists, including many legislators, say Johnson overstepped his authority in an attempt to avoid scrutiny by Parliament.

Lower courts in the U.K. were divided on the issue.