TORONTO - Kenyan author Ngugi wa Thiong'o, Nigerian poet and novelist Ben Okri and Iranian writer Azar Nafisi are among the literary heavyweights scheduled to appear at this year's Luminato arts festival.

Readings and panel discussions will be featured at the wide-ranging cultural event, which will explore how rights and freedoms are expressed through literature, said a release.

Other authors in the lineup include Booker Prize-winning Irish novelist Roddy Doyle, South African writer Deon Meyer, Canadian-born New Zealander Eleanor Catton and Giller Prize finalist Michael Helm.

A session titled Fiction in the Age of E-Books will look at the impact that digital reading devices might have on the methods of traditional storytelling.

Now in its fourth year, Luminato also includes theatre, dance, music, film and the visual arts. It runs June 11-20 at various Toronto venues.