Detectives said that a 49-year-old woman and a 14-year-old girl were arrested on suspicion of assisting an offender in relation to Mason Rist and Max Dixon's deaths on Sunday.

The 15-year-old and 16-year-old were fatally stabbed in Knowle West, Bristol.

They were taken to two hospitals - Southmead Hospital and Bristol Royal Hospital for Children - by ambulance, where they died early on 27 January.

Avon and Somerset Police said out of the 12 people arrested as part of the murder inquiry so far, five have been charged.

Three have been charged with murder and two have been charged with assisting an offender. All have appeared in court and been remanded in custody.

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Detective Superintendent Gary Haskins said: "A dozen people have now been arrested since the tragic events in south Bristol last weekend.

"Mason and Max's families are being supported by specialist family liaison officers and were earlier today updated about the latest two arrests.

"We are hugely grateful for the support the local community have shown us over the past week and we will continue to inform the public of any significant updates regarding this ongoing investigation.

"Five people have been charged with offences so far and therefore we would again remind the public not to share any images, footage or speculation about the incident so as to ensure those live court proceedings are not jeopardised."

Police originally said a 14-year-old boy was among the latest two arrested, but later corrected their mistake.