Police have released an image of a suspect with “distinctive” injuries wanted in connection with an alkali attack in south London.
Abdul Shakoor Ezedi, 35, was last seen at a Tesco store in Caledonian Road, north London, at 20:48 GMT on Wednesday.
Police warned the public not to approach him but to call 999 if they saw him.
Mr Ezedi had traveled to London from the Newcastle area, law enforcement said.
The image is from the Tesco store, where the suspect is believed to have purchased a bottle of water.
“He left the store and turned right,” the Met said.
“The image shows Ezedi with what appear to be significant injuries to the right side of his face. This makes him distinctive.”
The BBC understands that Mr Ezedi arrived in the UK by truck in 2016 and was refused asylum twice before being granted it on his third attempt.
A mother and daughter injured by the corrosive substance could have suffered “life-changing” injuries in Wednesday’s attack.
The 31-year-old woman and her three-year-old daughter remain in hospital, along with her eldest daughter, aged eight.
The suspect attempted to flee the scene in Clapham in a car, but crashed into a stationary vehicle and then fled.
Police believe he is known to the family, but said they are not yet clear on their exact relationship.
Superintendent Gabriel Cameron told reporters on Thursday that he had “no idea” of Mr Ezedi’s motivation but was “completely confident” he would be arrested.
He said Mr Ezedi was believed to be from the Newcastle area and the car left at the scene, a Hyundai, belonged to him.
He may have been known to police, Superintendent Cameron added.
“Although this was a targeted attack, this is a dangerous individual and we urgently need to find him,” the Metropolitan Police said on Thursday.
Supt Cameron said the suspect was last seen in the north London area in Caledonian Road and if people saw him they should not approach him but call 999.
There was an increased police presence on Caledonian Road on Thursday afternoon, including unmarked cars with blue sirens and police vans.
A total of twelve people were injured in the attack. Of four members of the public who tried to help, three were injured in hospital: two women in their 30s and one in their 50s. Police say she “bravely came to the aid of the family” and has now been released from hospital.
London Ambulance Service said it sent a response team, including three ambulance crews, to the scene after receiving a call about an incident near Clapham Common shortly before 19:30 GMT on Thursday.
A man in his 50s refused medical treatment for minor injuries he suffered at the scene.
Five police officers who were injured while responding to the attack have been released from hospital after receiving treatment.
Some of the burns suffered by the mother and her daughters in the attack were “quite significant”, Met Police chief Sir Mark Rowley told the BBC on Thursday, but added that he had not still a complete idea of their injuries.
They were attacked on Lessar Avenue, near Clapham Common, at 19:25 GMT on Wednesday evening. Police were called following reports of an attack involving a “corrosive substance”.
A witness told the BBC the mother shouted “I can’t see, I can’t see” as he tried to help her.
Police have urged any members of the public who saw what happened to call 101 quoting CAD 7790/31jan.
Officers also asked local residents and drivers to check their doorbell and dashboard cameras for any footage that may have captured a man fleeing the area.
A crime scene is now in place and will likely remain there for some time, according to police.