Police are investigating what is understood to be a possible Islamic terrorist motivation for a stabbing in south Belfast earlier this month.
A 51-year-old man was injured in the attack close to the Ormeau Road area on 1 March. He has since been discharged from hospital.
Assistant Chief Constable Davy Beck said a motive had not been established but police were exploring a number of factors, “including the possibility that this was a hate crime, a mental health episode or driven by religious ideology”.
An 18-year-old man was arrested on suspicion of wounding with intent to do grievous bodily harm and possession of an offensive weapon in a public place.
He was arrested following the attack but is now being detained in a mental health facility.
Police said the victim continues to receive support from specialist officers.
No other individuals are being sought in connection with the attack.
Police have asked anyone with information to get in touch.