A painting by Mark Rothko has been defaced at the Tate Modern art gallery.
Police were called after a small area of the mural piece was painted, a spokeswoman for the gallery said.
Tate can confirm that at 3.25pm this afternoon, there was an incident at Tate Modern in which a visitor defaced one of Rothko's Seagram murals by applying a small area of black paint with a brush to the painting. The police are currently investigating the incident.
The gallery was shut for a short period and then reopened.
More top news
A British Tamil cricketer has died after being hit in the chest by a ball.
A mix of sunshine and frequent showers is in store for the rest of today.
Dozens of plots have been thwarted since July 7, 2005, but are we any less vulnerable to terror attacks?