Update: Security alert in Derry ended

A security alert in Derry following the discovery of a suspect device in the area of the Lecky Road flyover has ended.
The device in question has been declared a hoax by ammunition technical officers who attended the scene.
The alert caused a number of houses in the vicinity to be evacuated, those residents have now been allowed to return.
PSNI have condemned the actions of a small group of people who threw missiles, including petrol bombs and fireworks, at officers during the security alert.