Thankfully we rarely see the London Air Ambulance hovering over West Hampstead, but this lunchtime the red helicopter landed first on Fortune Green, and then about an hour later in Kilburn Grange Park.

Air ambulance arrived at Fortune Green a little while ago with a great clatter and uprush of fallen leaves @NW6FOFG pic.twitter.com/t1EmVALBqA

— Paul Brightwell (@brightwell08) December 21, 2014

@WHampstead there was an incident at the bus stand on west end lane. LAS Police and Fire Brigade in attendance

— rekab_mik (@k1mbo999) December 21, 2014

The red helicopter was back within the hour and looked as if it was trying to find a landing spot in Kilburn. It eventually set down in Kilburn Grange park and shortly afterwards a Kilburn resident tweeted a photo of ambulance crews.

Ambulance crews and police on Priory Park Road in Kilburn via @donks80 pic.twitter.com/KQDmCyk783"

— West Hampstead (@WHampstead) December 21, 2014

Although one person had tweeted that there had been a stabbling, which was then picked up by a couple of other people, the cause of the commotion has not been confirmed. But here’s what Donks80 saw:

@AmyWorldwide @WHampstead someone just got wheeled out of the flats

— Donks (@donks80) December 21, 2014

@nickhudgell @WHampstead one of the 2nd floor flats had all its windows broken

— Donks (@donks80) December 21, 2014

Later in the evening, the police were still in attendance:

@nickhudgell @WHampstead still a police presence at 8pm.

— Donks (@donks80) December 21, 2014