This thesis aims to investigate the decision-making process of duty officers within the Swedish Police Authority in relation to the search for missing persons. Each year, thousands of disappearances are reported in Sweden, creating a pressured situation for the police where quick and accurate decisions are crucial for saving lives. Through qualitative interviews with duty officers, the study identifies the factors and risk indicators that influence the assessment of whether a person should be classified as missing or disappeared. The thesis also highlights the challenges faced by duty officers, such as time constraints and the need for reliable methodological support to make effective risk assessments. The results show that a combination of experience, access to current tools, and a clear decision-making process is essential for managing these complex situations. This study contributes to a deeper understanding of the police's work with missing persons and provides insights that can improve future decision-making in the field.