Climate activists have thrown tins of what appears to be tomato soup over a Van Gogh painting of sunflowers at the National Gallery in London.
Footage showed two people in Just Stop Oil T-shirts opening tins and throwing the contents on the masterpiece before glueing their hands to the wall.
The Metropolitan Police said two people had been arres.
The gallery said the painting was cover by glass and, therefore, not damaged.
A statement from the Trafalgar Square venue said: “At just after 11 am this morning, two people entered Room 43 of the National Gallery.
“The pair appeared to glue themselves to the wall adjacent to Van Gogh’s Sunflowers (1888). They also threw a red substance – what seems to be tomato soup – over the painting.
“cleared the room of visitors and called the police. Officers are now on the scene.
“There is minor damage to the frame, but the painting is undamage.
“Two people have been arrested.”
The Metropolitan Police said: “Officers were rapidly on scene at the National Gallery this morning after two Just Stop Oil protesters threw a substance over a painting and then glued themselves to a wall.
“Both have been arrest for criminal damage and aggravated trespass. Officers are now de-bonding them.”
Videos of Friday’s incident showed a protester shouting: “What is worth more? Art or life? Is it worth more than food? Worth more than justice? Are you more concerned about the protection of a painting or the protection of our planet and people?”
She also referenced the cost of living crisis and “millions of cold, hungry families” who “can’t even afford to heat a tin of soup”.
The painting is one of seven Sunflowers works Van Gogh create in 1888 and 89, five displayed in galleries and museums worldwide. The artist created them to decorate his house in Arles, France, before visiting his friend, the artist Paul Gauguin.