A local cinema has been forced to shut its doors following a barrage of social media threats prompted by an incident involving a young cancer sufferer.

The Bay City Cinemas did not permit Addison Wilson-Mitchell, her brother and father to enter the movie theatre carrying a bag containing supplies including medications, one which she needed to take during the movie.

James and Kristen Wilson-Mitchell with children Ethan, Bailey and Addison. Credit:Josh Gidney

The business has a strict no backpack policy, citing the health and safety of other patrons.

Addison's mother Kristen Wilson-Mitchell said the venue was not willing to bend the rules.