Police investigating an assault on a teenager in Dagenham have released footage of the attack in which one of the suspects appears to throw a chemical substance over the victim.
In the CCTV footage three men can be seen setting upon the 16-year-old victim, hurling a nearby rubbish bin at him and punching and kicking him.
At one point one of the men appears to unscrew a bottle and empty the contents onto the victim.
Watch the CCTV footage below.
The victim was later treated for chemical burns by the London Ambulance Service.
The attack occurred on Friday 4 September in Dagenham, in east London.
According to the Metropolitan Police, the teenager was walking along Downing Road in Dagenham between just before midnight when a white van stopped on the road and three men jumped out and attacked him.
One of the men then emptied the liquid contents of a bottle over the victim's head causing his eyes and face to burn, police said.
Police described the liquid as a "corrosive substance".
All three men are described as white, of large build and aged between 40 and 50.
Anyone with any information is asked to contact police on 101 quoting reference number 188363 or Crimestoppers anonymously on 0800 555 111.
