A deadly knife attack in Mulhouse, France, has reignited debates on national security and immigration policies.

The assailant, a 37-year-old Algerian man under an obligation to leave France (OQTF), killed a 69-year-old man and injured five police officers.

The attacker, known for his radicalization and mental health issues, had been denied repatriation by Algeria multiple times.

This incident highlights ongoing challenges in managing radicalized individuals and strained Franco-Algerian relations.

Politicians are calling for stricter immigration controls, with some urging a review of agreements facilitating Algerian migration.

The attack underscores the persistent threat of terrorism in France, which has faced over 20 Islamist attacks since 2017.