A manhunt is under way after a woman and baby were stabbed in west London.
The woman, in her 30s, and a one-year-old boy were found suffering stab injuries at a residential address in the London Borough of Hounslow on Monday evening.
The Metropolitan Police said the boy remains in a critical condition, while the woman's injuries are not life threatening.
A reported 50 police officers and paramedics were called to Swinfield Close in Hanworth at around 7.12pm following a report concerning residents' safety.
At the scene they found the woman and infant suffering knife wounds and the pair were rushed hospital in west London by the Air Ambulance Service.
A mother-of-three, 38, who wished not to be named said: "They just moved to the area recently - three or four months ago they moved to the Oriel Estate. They were my friends' neighbours."
She added: "We didn't sleep last night. It's especially shocking for mothers.
"I can say it concerns me that a mother can't save herself because it is cruel, it's your home and it's totally cruel."
Neighbour Gary Fletcher, 63, retired, a father-of-three and grandfather said two boys aged around six and next door neighbours of the victims witnessed their injuries.
He said: "They ran out screaming. One was pointing to his stomach so I presume he saw the stabbing."
A spokesman for Scotland Yard said: "Police have launched an investigation after two people were stabbed in Feltham.
"Officers were called to a residential address at Swinfield Close at 7.12hrs on Monday, June 4 to reports of concerns for the welfare of the occupants.
"London Ambulance Service and London's Air Ambulance attended.
"At the scene a woman, aged in her 30s, and a one-year-old boy were found suffering stab injuries.
"Both victims were taken to a west London hospital for treatment.
"The boy remains in a critical condition. The woman's injures are not life threatening.
Local Tim Stollery tweeted: "As much as I like spotting the helicopters overhead, it can't be a good thing seeing both the National Police Air Service and the London Air Ambulance in attendance over Hanworth, Feltham and Oriel this evening.
"Fingers crossed whoever might be on board makes a good recovery."
According to reports, officers flooded the area and pictures showed police dog handlers at the scene.
No arrests have been made and police remained at the address on Monday night as investigators sealed off the crime scene.
Anyone with information is asked to contact Hounslow Police on 101 or tweet @MetCC quoting CAD 6981/4June or call Crimestoppers on 0800 555 111.