SIX people have been hurt in a mass acid attack after a gang reportedly went on a rampage near an East London shopping centre, spraying people with a noxious liquid.
Police and paramedics were seen treating injured victims at Stratford tube station and a nearby bus shelter after the horror next to a Westfield shopping centre and the former Olympic Park.
Horrified eyewitnesses took to social media to share their shock after the attack in an area packed with shoppers and Saturday night revellers at 8pm local time (5am AEST).
Terrified witnesses at the scene said an argument broke out among a group of people before several people began spraying what is feared to be acid.
One victim is believed to be a homeless man who ran for help into a Burger King at the Stratford Centre, another shopping centre nearby.
Dramatic video showed police officers treating another wounded victim inside the tube station.
Kirsty Austin wrote: "Too scared to leave the station I think if I heard right... the guy on the floor had acid thrown at him.
"WHO. COULD. EVER. ATTACK. SOMEONE. THEY. DON'T. KNOW. I'm actually done with how awful this year has been for innocent people."
She added: "Was at the station a min after and sadly saw and heard him.
"Wishes for him and the friends who were with him."
A man who gave his name as Hossen, 28, a Burger King assistant manager, said he saw a victim and his friend, a known local homeless man, run into the fast food outlet bathroom "to wash acid off his face".
He said: "There were cuts around his eyes and he was trying to chuck water into them."
Inside the Burger King toilets, water could be seen all over the floor, along with toilet tissue and medical gloves.
Outside, people gathered at police cordons while victims were being treated behind a blue screen.
Many of those at the scene, kept inside the cordon by police, were visibly upset by the incident.
One said: "I can't speak now, my mate's been hurt."
Another case of an acid attck at stratford 😧😧😧 pic.twitter.com/yOXIpVOZhT— OFFICIALZAKAVELI💯 (@OfficialZakveli) September 23, 2017
The Metropolitan Police confirmed that an acid attack has taken place. A statement read: "Police were called just before 20.00hrs on Saturday, 23 September to the area around Stratford Shopping Centre to reports of a group of males spraying what is believed to be a noxious substance.
"London Ambulance Service and London Fire Brigade have attended.
"A number of people have been reported injured at different locations - believed to be six people. We await further details.
"One male has been arrested on suspicion of GBH.
"Officers remain on scene. A cordon is in place. Inquiries continue."
Police said the attack is not believed to be linked to terrorism.
WHERE HAVE THE MOST RECENT ATTACKS TAKEN PLACE?
Monday June 19 The Only Way Is Essex star Ferne McCann's ex-lover Arthur Collins denied carrying out an acid attack in a nightclub in Dalston, East London, which left two revellers partially blinded.
Wednesday June 21 Two cousins were allegedly doused in acid while sitting in their car in Beckton, East London, on June 21.
Tuesday, July 4 A heavily pregnant woman reportedly had acid thrown over her while her partner suffered injuries to his face in an alleged attack in East London.
Thursday July 13 A 16-year-old boy who was arrested in connection with a horrific spate of five acid attacks across London is charged with 15 offences.
Friday July 14 A biker reportedly had a "noxious substance" thrown in his face during a failed bid to steal his bike in Dagenham, East London.Sunday July 16 A female paramedic was said to have had chemicals thrown in her face by masked thugs as she responded to a 999 call in Tottenham Hale, North London. Tuesday July 18 Police were hunting a thug allegedly caught on CCTV hurling cleaning fluid into a face of a drinker outside The Chalice pub in Dickens Heath, West Midlands. Tuesday July 25 Witnesses described the desperate screams of two young men who were targeted in what is believed to be an acid attack in Bethnal Green, East London, with a man since charged. Monday July 31 Shocking footage shows a moped gang fleeing and being chased by shoppers after a suspected acid attack outside Harrods in central London. Tuesday August 8 Jealous schoolgirl Emily Bowen, 18, was jailed for 21 months after pouring drain cleaner into fellow orchestra member Molly Young's viola case in an attack which left her scarred for life. Tuesday August 8 A man had to be hosed down by firefighters after a suspected acid attack just yards from Kensington Palace in West London. Saturday August 26 A man and woman were attacked by a noxious substance in the early hours in Daventry, Northamptonshire. Sunday August 27 There were shocking scenes at the Notting Hill Carnival when revellers were forced to flee after a liquid thought to be acid was thrown into the crowd. Saturday September 23 Tonight's acid attack, said to be carried out by a gang across the Stratford area.