Two boys have been arrested after a 12-year-old was stabbed in the hand and leg by three children during an attempt to rob him.
The victim was attacked outside Tesco Express in Whitehorse Road, Croydon, South London at 5pm on Monday.
Two 15-year-old boys were arrested in Croydon yesterday on suspicion of causing grievous bodily harm and were being questioned, Scotland Yard confirmed.
The 12-year-old was taken to hospital after the attack although his injuries are not believed to be life-threatening.
More top news
The 24-year-old was unarmed and the incident is not being treated as terror-related.
Some platforms have been taken out of service with disruption expected to continue until the end of the day.
The Met Office has extended its weather warnings for snow and ice to cover vast swathes of the country, including London and the South East.