Islamic state has been posing a major threat to Mozambique which apparently the country has been struggling to contain. The threat of terrorism greatly affects the northern province of Cabo Delgado which is bordering Tanzania. The terrorist attacks in Cabo Delgado have also attracted the intervention of the regional body, Southern African Development Community’s (SADC) but exposed its inability to stamp a meaningful authority to support its member state during this security challenge. This chapter explores the phenomenon of terrorism in Mozambique especially the activities of the Islamic State of Central African Province (ISCAP). It provides an overview of ISIS historical mutation and focuses on Mozambique’s affiliate group. The chapter delves into the choice of “Cabo Delgado in Mozambique” as the epicenter and center of gravity of the group’s operation. This chapter relies on secondary sources analyzed through content analysis. The chapter links multiple push and pull factors to the rise of this extremist group in Mozambique. These factors include citizen-state mistrust, land disputes and lack of satisfaction in land resettlement programs, and marginalization in job opportunities which were identified as push factors while weak states and porous borders were established as pull factors. The chapter notes lack of proper counterterrorism strategies on the Mozambique government side and recommends that internal criminal groups are best contained by national police and the intelligence agencies for the purpose of investigation, prosecution, and conviction within the criminal justice system while discouraging the military which is more of offensive and defensive combat force that may use excessive force. The chapter discourages neighboring countries to participate in the multidimensional deployment of forces in Mozambique as this may create conflict of interest. The chapter anticipates the boldening of the ISIS regionalization resolve as a regional threat to the Eastern Africa region beyond Mozambique.