The present study aimed to identify organizational climate dimensions that are salient for police investigation performance, and to explicate the mechanisms of the relationship between organizational climate and investigation performance. We conducted thirty-eight semi-structured interviews with participants at three job levels of police investigative work (Chiefs of Police, n =11, Senior Investigating Officers, n = 14, Detectives, n = 13) in eleven Norwegian police districts. We analysed the interview data by using a model of organizational climate based on the Competing Values Framework (Quinn & Rohrbaugh, 1983). Two types of climate, Human Relations climate and Rational Goal climate, were perceived to enhance investigation performance. The findings indicate that a Human Relations climate enhances investigation performance by developing collective human capital, and by supporting internal and external cooperation and coordination of resources. Moreover, the findings suggest that a Rational Goal climate increases investigation performance by encouraging planning, goal-setting, and task focus.