Photo: RNZ / Rebekah Parsons-King Father of two Chris Bush, 43, was gunned down at the pub in Maramarua in October 1987, and the offenders took off with tens of thousands of dollars in cash, coins and cheques. Mark Hoggart and another man - who has name suppression - are on trial in the High Court at Auckland, charged with murder and aggravated robbery. They deny the charges and say police arrested the wrong men. Detective Senior Sergeant Michael Hayward was one of the officers involved in the re-investigation of the homicide, dubbed Operation Lion, which began in 2016. In his evidence, Hayward said there were 230 people considered persons of interest in the original investigation, which wound down in mid-1988 without anyone being charged. Another investigation which began in 1999 also failed to result in arrests.