Armed police officers from the Met Police raced to Primrose Hill in Regent’s Park London at around 6pm on Tuesday evening following reports of a knife attack taking place.
Officers could be seen descended into the packed park and have cordoned off an area following the attack.
The London air ambulance was also scrambled to the scene along with member of the LAS Hart team.
The condition of the victim is not currently know and the Met Police have been contacted for comment.
More to follow