A WITNESS in the Madeleine McCann probe is to sue discredited Portuguese cop Goncalo Amaral for defamation. HGV driver Helge Busching, 49, identified prime suspect Christian B, 44, to cops. The SunA witness in the Madeleine McCann probe is to sue discredited Portuguese cop Goncalo Amaral, pictured, for defamation[/caption] His evidence helped nail the convicted paedophile of a rape in Portugal in 2005 close to where Madeleine vanished in 2007, aged three. Amaral — thrown off the case after wrongly identifying parents Kate and Gerry as suspects — branded German Busching and a pal “unreliable witnesses” in a book. Busching told The Sun: “I’m not happy with what has been said about me by this policeman.” His lawyer, George Tzeriz, said the criticism was “unjustified and unwarranted”. He said: “He is a key witness in this investigation and is seen so by the police.” Most read in News GRIM TOLL UK daily Covid cases rise by 39,962 in 24 hours amid fears WFH & masks may return 'SORT IT OUT' Maccies Halloween display mocked by customers over 'X-rated' broomstick DOUBLE MURDER Two teens die from 'stab wounds' after local heard victim 'screaming in pain' VILE RANT Woman who racially abused bouncer MOANS at staff for filming shocking outburst JAB BOOST Millions to get Covid booster a MONTH early as winter lockdown fears intensify BENEFITS TRAP Single mum demands Universal Credit shake-up to make work worthwhile RexHGV driver Helge Busching identified prime suspect Christian B (pictured) to cops[/caption] PAAmaral — thrown off the case after wrongly identifying parents Kate and Gerry as suspects — branded German Busching and a pal ‘unreliable witnesses’ in a book[/caption] APMadeleine vanished from Praia da Luz, in the Algarve region of Portugal in 2007 aged three[/caption]