WARNING: This video contains graphic footage showing the aftermath of a knife attack. CBC News has verified the video is from the attack scene. Police in Northern Ireland have arrested a Sudanese national in his 30s on suspicion of attempted murder after a serious knife attack in Belfast during the evening of June 8. The victim, a man in his 40s, remains in a serious condition, while police have appealed for calm and are increasing their visible patrols. CORRECTION (June 15, 2026): A previous