This document discusses an investigation into "Inroamer Frauds" on the mobile network of Ooredoo. Inroamers were making high volumes of calls to fraudulent destinations from Ooredoo's network to generate illegal revenue. The investigation found that inroamers were originating from 27 distinct cell sites in Saudi Arabia and Dubai. Whenever blocking was applied to fraudulent numbers, the inroamers would start calling new numbers. The objectives of the investigation are to identify any Qatari or non-Qatari individuals involved, check for links to legitimate Ooredoo subscribers, and use fingerprinting and profiling to track the prime suspects behind the fraud.