Image copyright Pacemaker Image caption The woman was airlifted to hospital in Belfast

A woman is in a critical but stable condition in hospital after being hit following a crash involving three motorcycles at the North West 200 motorcycle event.

Organisers said the "serious incident" happened on the section of the course between York Corner and Mill Road Roundabout.

Two riders were also taken to hospital.

Stephen Thompson is in a critical condition, Horst Saiger sustained minor injuries.

The woman was a spectator at the event.

She was taken to hospital by helicopter.

The Belfast Health and Social Care Trust has described the woman's condition as critical but stable.

Mervyn Whyte, NW200 race director, said the two riders, Thompson and Saiger, were conscious when they were transferred to hospital in Coleraine.

A spokesperson for the event said Thompson had now been transferred to the Royal Victoria Hospital where he is being treated for his injuries, while Saiger is believed to have only minor injuries and remains in Coleraine.

The crash happened during the opening Superstock race on Saturday.