Kenneth Branagh has tested positive for coronavirus just days before the Academy Awards ceremony in Los Angeles.
Ciaran Hinds, who is nominated in the Best Supporting Actor category for his role in 'Belfast', has also tested positive. Both are understood to be isolating in New York.
'Belfast' is up for seven awards including Best Picture, Best Director and Best Original Screenplay, with the awards ceremony to take place this Sunday.
Read more: NI 'Belfast' premiere was one of the 'best nights' of Jamie Dornan's life
Stars of the film Jamie Dornan and Catriona Balfe are also due to attend the Oscars ceremony.
It is understood Branagh will not be able to attend the Academy Awards in person, and will send a pre-recorded acceptance speech instead.
The director was also unable to make an appearance at a Producers Guild Awards (PGA) event on Saturday and participated virtually instead.
This will be the first in-person Academy Awards since just before the pandemic in February 2020, as in 2021 it was held mostly virtually.
All guests at this year's Oscars will be asked to submit negative Covid-19 tests and proof of vaccination.
Presenters and performers will not have to be vaccinated but will have to show they have recently tested negative for the virus.
Earlier this month, 'Belfast' won the Outstanding British Film award at the BAFTAs.
The film's star, 11-year-old Jude Hill who plays the leading role, Buddy, scooped the Critic's Choice Award for Best Young Actor earlier this month too.
Read more: The streets and places that made up Kenneth Branagh's early life in Belfast
Read more: Watch: Jude Hill's adorable speech as he wins Critics Choice Award for 'Belfast'
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