Tasman police district commander Grant O'Fee speaks at the 2004 unveiling of a Kōwhitirangi memorial to the men killed by West Coast dairy farmer Stanley Graham in 1941. On 8 October 1941, after a neighbour reported Graham for threatening behaviour, four policemen arrived at his property and were shot. William Cooper, Frederick Jordan and Percy Tulloch were killed, and Constable Edward Best was wounded and died later. George Riley, an agriculture inspector, was also shot when he arrived at the house, and died as a result of his wounds in 1943. Graham disappeared for a day and then returned to the house on 9 October, where he was confronted by homeguardsmen Richard Coulson and Gregory Hutchison. After killing Coulson and fatally wounding Hutchison, the wounded Graham fled into the bush. He was found, then shot and fatally wounded on 20 October 1941.