A witness told Express.co.uk: "There are about 15 police cars, several ambulance vehicles and the air ambulance has landed while a police helicopter is circling above.

"The paramedics and police are around at least one person who is injured on the floor. I got told it was a stabbing, but I'm not certain.

"Two police officers are holding up a sheet to obscure the view while the paramedics attend to the person.

Emergency services are responding to a major incident with police, ambulance crews and an air ambulance on the scene.

Witnesses said it was believed paramedics were attending to a possible stab victim in a park, although this has yet to be confirmed by police.

The scene unfolded just after 8pm this evening, Saturday, July 27, in Plashet Park, Manor Park, east London.

"I have seen a forensic tent being put up, so it doesn't look good."

Express.co.uk has contacted the Met Police, London Ambulance Service and the air ambulance and awaits responses.

We will bring you more on this story as it develops.