A man who was arrested after two women were stabbed in a Marks & Spencer store, has been detained under the Mental Health Act, police said.

A member of staff in her 40s and a shopper in her 60s suffered stab injuries at the shop in St James Street, Burnley, at 9.30am on Wednesday.

A Lancashire police spokesman said the 57-year-old man had been detained for 28 days for an assessment of his mental health.

The incident is not being treated as terrorism and inquiries are continuing, the force said.

The spokesman said one woman remained in hospital and the other had been discharged.

The scene outside the M&S store in Burnley

The man was detained by members of the public and staff and a knife was recovered at the scene.

Superintendent Stasia Osiowy said: "Our inquiries into this incident are ongoing and I would like to continue to appeal to members of the public who may have seen or filmed this incident, or who have information which could assist, to get in touch with us.

"Mercifully, while the injuries caused in this incident were serious, they are not life-threatening and the two women involved are continuing to receive the support of specially trained police officers.

"I would like to stress again this is not being treated as a terrorism incident and we continue to keep an open mind as to motivation of this individual.

Police were at the scene in St James' Street

"I would like to thank the community for their understanding and co-operation while we dealt with an incident which clearly had the potential to cause a great deal of concern.

"We will continue to update people on the course of our investigation as and when we can and there will continue to be extra patrols in the town centre to reassure."

Anyone with information or video footage can call 101 quoting log 0313 of December 2 or Crimestoppers on 0800 555111.