A man has been blinded by a stranger who threw acid in his face following a row in an upmarket London street.
The 58-year-old hospital cleaner was walking to work when he got into the dispute with another man in Belgravia.
The man then produced a container and threw a liquid into the victim's face, leaving him blinded and in pain, police said.
The attack happened at 3.45am on Wednesday at the junction of Cambridge Street and Clarendon Street in one of the plushest parts of London.
Police were called by a resident who heard the victim shouting for help and saw him staggering along Cambridge Street, bumping into parked cars.
The victim was taken to a specialist hospital where he is receiving treatment for burns to his face.
Doctors believe the injuries were caused by some form of acid.
Early indications are that he will lose his sight.
Det Sgt Darren Nayler, from the Westminster Serious Violence Unit, described the attack as particularly vicious.
He said: "The suspect used the acid to deliberately injure the victim and the fact that he was carrying it around in his pocket in the first place suggests that he intended all along to use it to cause harm.
"The area around Belgravia is one of the safest in the borough and it is the first time we have seen an attack of this nature anywhere in Westminster."
The attacker is described as a dark-skinned male, wearing a hooded top possibly with writing across the front. His face was partially covered by a scarf.
:: Anyone with information is asked to call the Westminster Serious Violence Team at Belgravia Police Station on 020 7321 9315 or Crimestoppers anonymously on 0800 555 111.
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