TESCO, Sainsbury's and Waitrose supermarkets have been locked down tonight after a shopper allegedly injected food with a mystery substance.
Shoppers were told to stay away from the supermarkets in Fulham, West London.
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This Tesco supermarket in Fulham has been locked down tonight Credit: Twitter / @jjohnag 4
This Sainsbury's on the same road was also closed 4
They were also urged to bin any food they had bought from the stores this evening.
Hammersmith and Fulham Council said the Met Police had arrested a man on suspicion of contaminating food.
The council tweeted: "The supermarkets - Tesco, Waitrose and Sainsbury's - have closed and crime scenes are in place.
"Officers were called at around 7.40pm after a man was reported to be shouting abuse at people in the street.
"The man is alleged to have visited three supermarkets on Fulham Palace Road and injected foodstuffs using a number of syringes. He has been taken into police custody.
"Members of the public are advised as a precaution to dispose of any food items bought from these supermarkets this evening.
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"H&F Council's Environmental Health team are now working with the supermarket branches affected."
The council said processed meat and microwaveable products are believed to have been affected.
It's unknown as to how many items have been contaminated, or what substance they had been injected with.
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A man has been arrested on suspicion of contaminating food at supermarkets including this Waitrose
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