A mother and her baby son are in hospital with life-threatening injuries after being stabbed inside a house, as police arrested a man in his 20s for attempted murder.
Police was called to the property in Wallsend, near Newcastle, at around 2.15 pm to reports of a serious assault.
Police said they are not looking for anyone else at this time.
A police cordon is in place and officers have launched an investigation into the assault.
Detective Chief Inspector Dave Cole, of Northumbria Police, said: ‘This has been a very serious assault that will shock the local community.
‘The victims of this assault are currently in hospital in a critical condition and it is still the early stages of our investigation.
‘However, I want to reassure the public that this does not appear to be a random attack and that those involved are all known to each other.
‘We have a suspect in custody, we are not looking for anyone else and we do not believe there is any wider risk to the public.
‘Extra officers will be on patrol in Wallsend this afternoon and throughout the evening to reassure anyone who has any concerns.’
The Great North Air Ambulance said: ‘We were called to an incident in Wallsend at 2.10 pm.
‘We dispatched one helicopter with a doctor and paramedic on board.’