Police were called to Cromer Pier at 7.35pm on Friday to reports that a large group of teenagers were "acting aggressively towards event staff". The resulting altercation led to a woman in her 20s being arrested and she was released the next day. Police were called Cromer Pier (Image: Supplied)She will face no further action regarding the incident. It took place during Cromer Pier's "sunset sessions" event, in which beachgoers were invited on the pier to enjoy the sunset while a guest DJ "provided the soundtrack to the evening". The event, which was not ticketed, was shut down by event staff following the altercation.