Evaluating the Effects of Investigative Journalism on Policy and Public Action: A Case Study of Radio Chimwemwe and Sun FM's Reporting on Mealie-Meal Smuggling in Zambia's Copperbelt Province

This article examines the role of investigative journalism in shaping policy and public action in Zambia, focusing on Radio Chimwemwe and Sun FM's coverage of mealie-meal smuggling in the Copperbelt Province. Using a qualitative case study design, data were collected from 25 purposively selected participants, including journalists, editors, civil society leaders, and community members. Findings suggest that investigative journalism contributed to increased public awareness and stimulated civic discussion, while also appearing to influence government enforcement actions such as border patrols and seizures. However, evidence of direct policy formulation was limited. Structural challenges—including financial constraints, restricted access to information, and political pressure—undermined the depth of reporting. The study concludes that radio-based investigative journalism in Zambia functions primarily as a catalyst for public awareness and enforcement rather than a direct driver of legislative reform. Recommendations include strengthening institutional support, improving journalist safety, and fostering collaboration between media, government, and civil society.