A man has been detained under the Mental Health Act after a major security incident at the Arndale shopping centre in Manchester.

Police descended on the centre at 8.55pm on Friday to reports of a man with a knife. The alert comes a week after two people were stabbed by a man in a random attack at the shopping centre.

Greater Manchester police said on Saturday a 26-year-old man had been arrested on suspicion of affray and had since been detained under the Mental Health Act.

A woman suffered a minor injury during the incident and was treated at the scene, GMP said, but no other injuries have been reported.

Last Friday, a 40-year-old man sparked a terror alert when he allegedly launched an attack on passersby on the ground floor at the centre, at a time when it was busy with shoppers. He was later detained under the Mental Health Act after four people were injured.

Counter-terrorism officers are leading the investigation, although they have confirmed that so far no political, religious or ideological motivation has been uncovered.