We were called at 11.36am on Monday August 12 to reports of a stabbing at Leicester Square
I heard a scream, at that moment I saw there was one person, roughly [in their] mid-30s or early 30s, and he was like stabbing a kid'
When I looked to my side I saw a young man... was stabbing her several [times] with a knife
We don't believe there are any outstanding suspects
This is a horrific incident and our thoughts are with the victims and their family
It was so terrible, I've never seen a thing like that
Before I could jump down to go [over there], two guys were just passing, and they grab him, they put him on the ground, and immediately the police came'
We were sat in Leicester Square and heard a female scream, we walked across at that point police were just arriving quite promptly followed by ambulance crew
At this stage we don't believe the suspect and the victims were known to each other
An urgent investigation is now ongoing and detectives are working to establish the details around exactly what happened,
They put themselves at risk and showed the best of London in doing so,
I jumped on him, held the hand in which he was (carrying) a knife, and just put him down on the floor and just held him and took the knife away from him,
Clearly, some of those far-right actors have got a taste for this and are trying to provoke similar in towns and cities across the UK,
The horror of yesterday's attack in Southport is washing over me continuously,
These were just little kids at a dance class,
I would like to pay tribute to the members of the public, including staff from local businesses, who bravely intervened in this incident,
Officers are at the scene of a stabbing in Leicester Square. A man has been arrested & is in custody. We don't believe there are any outstanding suspects. Two victims, an 11-year-old girl & a 34-year-old woman, have been taken to hospital & we await an update on their condition."
At this stage, there is no suggestion that the incident is terror-related."