By Chiara Fiorillo Harry Dunn’s family are holding a second funeral for the teenager after finding out that police had kept some of his remains for four and a half years. The teen’s mum, Charlotte Charles, said she was left feeling “sick, angry and bewildered” after being told that “human tissue” had been found on Harry’s possessions. The 19-year-old was killed in a head-on collision with US spy Anne Sacoolas who was driving on the wrong side of the road near RAF Croughton in Northamptonshire. Sacoolas had diplomatic immunity asserted on her behalf by the US government and was able to leave th…