A 17-year-old boy from Lancashire has been arrested on suspicion of murder following the death of a 34-year-old woman from Poole.
The woman was pronounced dead at the scene and a 38 year old woman, also from Poole, was taken to hospital with very serious injuries.
Police were called to reports that two people had been stabbed on the beach just before midnight on Friday and parts of Bournemouth seafront remain closed for investigation work.
A cordon is in place between the Bournemouth Oceanarium and the Western side of Alum Chine. The beach, promenade, beach huts, Durley Chine car park, all businesses and access points within the cordon are currently closed.
Detective Superintendent Richard Dixey, of the Major Crime Investigation Team, said: “We have worked tirelessly throughout the night since the initial report and have been able to progress our investigation.
“Foremost, our thoughts remain with the loved ones of the woman who very tragically lost her life.
“Officers are continuing with their enquiries and a cordon remains in place and is likely to remain so for some time.
“I would like to renew my appeal for anyone with information who has not yet spoken to officers to please contact us. I am particularly keen to hear from anyone who was in the vicinity of Durley Chine beach between 10pm on Friday 24 May 2004 and midnight and saw anything unusual. Information can be uploaded through our dedicated Major Incident Public Portal for this case.
“Members of the public will see an increased police presence in the area over the coming days and officers from the local neighbourhood policing team can be approached with any concerns.”