Chief Constable of Merseyside Police Serena Kennedy vows that Merseyside police "will not rest" until Olivia's killers "are put behind bars". The nine-year-old was shot in her home in Liverpool and later died in hospital. Police have appealed for anybody with information about the suspect to come forward. <br /> Report by Nelsonr. Like us on Facebook at http://www.facebook.com/itn and follow us on Twitter at http://twitter.com/itn
