A man has been stabbed at a London shopping centre packed with thousands of families and children on their school holidays.
Witnesses said the attack happened on the ground floor of Westfield London, with two men seen running away from the scene.
Police were called at 2pm and arrived to find a man in his 20s with stab wounds.
He was taken to hospital in west London by ambulance and his condition is unknown.
"Officers retain an open mind as to the motive but this incident is not terror related," a spokesperson for the Metropolitan Police said.
Two men have been arrested in connection with the incident.
Westfield London, in White City, is the second-largest shopping centre in the UK and the biggest in London.
It was partly closed as investigations into the incident continued on Friday afternoon.
The attack came amid increased security across the capital after a man went on a knife rampage in Russell Square, killing an American woman and injuring five others.
