Meet the author: Keith Elliot Greenberg

John Lennon, one of the greatest figures in modern music, was killed in New York thirty years ago on 8th December 1980.

The events leading to the former Beatles member's death and New Yorkers' reaction to it are now the subject of a new book.

In the latest in the BBC News Meet The Author series, Nick Higham speaks to New York author and journalist, Keith Elliot Greenberg, about his new book.