Two 15-year-old boys and a 16-year-old boy have been arrested on suspicion of murder.

Eight other teenagers - six boys and two girls aged between 15 and 17 - who were arrested on suspicion of murder earlier on Sunday remain in custody.

A 35-year-old woman, who was also stabbed in the incident, has been discharged after being treated in hospital.

Avon and Somerset Police said emergency services were called to an address in Eastfield Avenue shortly after 11pm on Saturday following reports of a stabbing.

People tried to help the boy with first aid before paramedics arrived, but he could not be saved and died at the scene.

Police say a post-mortem examination will take place in due course.

The arrests were made from a bus in Lansdown Lane at 11.30pm that night.

Chief Inspector Ronald Lungu said: "Understanding what happened and why is the utmost priority of officers working on this investigation, as they look to provide answers to the boy's family.

"Specialist liaison officers are now in place and have informed the boy's parents of this latest development. Our thoughts continue to be with them at this sad time."

He added: "Detectives continue to appeal for anyone who witnessed what happened, as well as anyone who has relevant phone, dashcam or CCTV footage, to contact them."

The force said they will be taking formal statements from witnesses and have urged people to come forward if they have not done so already.

Authorities said the area will see a significant police presence for the next few days while "officers and police staff carry out a number of actions including forensic examinations, a review of CCTV footage and house-to-house inquiries".

Mr Lungu added: "There is currently a large cordon in place on Eastfield Avenue while we carry out these enquiries and I'd like to thank those residents whose properties are impacted by this for their patience and understanding.

"I appreciate this is a concerning incident and I'd like to reassure people a thorough inquiry is taking place, however, should anyone have any questions I'd encourage them to make contact with their local neighbourhood policing team, who'll be carrying out extra patrols in the area."