Supporters include Atom Egoyan, Sarah Polley and Alex Gibney.

TIFF will host a press conference Tuesday to announce the growing list of names calling for the immediate release of filmmaker and professor John Greyson and Dr. Tarek Loubani, who are being detained in a Cairo prison without formal charges since Aug 16.

Filmmakers like Atom Egoyan, Sarah Polley, Alex Gibney are among the group that will join TIFF Bell Lightbox Artistic Director Noah Cowan and Greyson’s sister Cecilia at the conference.

More than 100,000 people have signed the global petition, being organized via #FreeTarekandJohn on Twitter and tarekandjohn.com.

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