Geophysicist-turned-author George Saunders has won this years Man Booker Prize for his first full-length novel - a decision which could rekindle a literary row that American writers would come to dominate the contest.
The book, Lincoln In The Bardo, which focuses on the night Abraham Lincoln laid his 11-year-old son to rest in 1862, was hailed as utterly original and praised by judges for its witty, intelligent, and deeply moving narrative.
The 58-year-old writer, who had been favourite to win, was presented with the prestigious literary award and 50,000 ($92,000) prize during a ceremony at the Guildhall in central London, attended by the Duchess of Cornwall.
Saunders becomes the second American author to take home the Man Booker Prize in its 49-year history, after Paul Beatty came top last year with satirical novel The Sellout.
The 2013 decision to open up the prize generated a debate over whether US authors would end up dominating the contest. That debate looks likely to be reopened by Saunders win.