Police want to speak to this man (Image: Metropolitan Police / SWNS)
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A man has been left blinded for life and another has been hospitalised after they were attacked by a stranger who threw a cup of what police believe is acid over them.
The pair were walking down a street in London when a man lobbed a cup of "corrosive liquid" over then and ran away.
Both victims were taken to hospital as a result of the attack, with one of the men now suffering permanent sight loss, police said.
The two men said they did not know the suspect, but claimed the same attacker turned up at one victim's house two months earlier and smacked him in the face.
He allegedly arrived at the man's home address claiming to have a letter for him, then punched him with a bike chain wrapped around his fist.
Police want to speak to this man
(Image: Metropolitan Police / SWNS)
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The first attack happened in September and the second was at around 8am on Monday, December 7 as the pair walked down a busy main road in Thornton Heath, south London.
Police have today launched an appeal for information, saying the identity of the attacker and his motive are unknown.
The suspect is described by the victims as a white or Asian man in his 30s with a slim build.
At the time of the attack he was wearing a blue medical face mask, a long black jacket with the hood up, black trousers and shoes, Met Police said.
Scotland Yard today also released a CCTV image of the man they want to question about the incident.
A spokesman for the force said: "On Monday, December 7, 2020, at approximately 8:10am, the two male victims were walking on Thornton Road, Thornton Heath, when they were approached by the suspect, a man they did not know.
"The suspect threw a cup of corrosive liquid over the two men before running away.
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"Both victims were hospitalised following the attack, with one of the victims now suffering from permanent loss of sight.
"During his statement of the incident, one of the victims said that the same man had turned up at his home address in September, prior to the incident, claiming to have a letter for him.
"When the victim proceeded to collect the letter, the man punched him in the face with a bicycle chain wrapped around his fist. No CCTV has been identified [of the first incident].
"At this stage the identity of the attacker and the motive behind the incident remain unknown.
Call police on 101 with information.