John Grisham's 23 bestsellers go digital

Celebrated author John Grisham's publisher Random House has announced on its website that all of the

The publishing house did not disclose the terms of the agreement.

Ironically, Grisham, the author of bestsellers such as The Firm, has earlier warned in a TV interview that digital publishing could make life harder for aspiring writers and hit traditional bookshops and publishers.

Grisham has sold over 250 million books worldwide, according to his publishers.

The e-book versions of his titles are currently available in the US and Canada.