Prisoner climbed Pentonville jail wall to escape
A convicted murderer is on the run after escaping over a wall at Pentonville prison in north London.
John Massey was jailed in 1975 for the murder of a man in east London, and is one of the UK's longest serving prisoners.
The Ministry of Justice has launched an investigation after Massey used a make-shift rope to escape.
Tom Symonds reports.