They wrote: 'We are deeply saddened and shocked to hear of the passing of Justin Edinburgh. Edinburgh turned professional in August 1988 at Southend United, before going onto enjoy … The O's confirmed tonight that he suffered a cardiac arrest as they broke the shock news their much-loved boss had passed away. 'Our heartfelt condolences and thoughts go out … Leyton Orient's statement on Twitter on Saturday said: "It is with profound and utmost sadness that Leyton Orient announces its manager Justin Edinburgh has passed away." “Dale told [his agent Cyrille Regis] Justin [Rushden manager Justin Edinburgh] had shouted at him and said, 'If you were my son I would kick you up the backside’. The Basildon native was born on December 18, 1969.