Police are appealing for photos taken at an event in Colindale on Saturday night after it ended with a man shooting three people.
The event was taking place to celebrate the 1st anniversary of 'Grime Daily' at a venue in Capitol Way, Colindale on Saturday 10 April.
At just after 04.00hrs, in the early hours of Sunday morning 11 April, a man opened fire with a gun within the venue.
Three people were injured during the shooting.
A 23-year-old man received four injuries to his chest and buttocks, he remains in hospital, not life threatening injuries.
A 21-year-old woman received an injury to her back, she remains in hospital, not life threatening injuries.
A 24-year-old man received an injury to his ankle he remains in hospital, not life threatening injuries.
Police are keeping an open mind as to the motive behind the shooting.
DI Michael Millar, MPS Trident said: "The event was well attended and we know that numerous people were taking photographs either with cameras or on their phones. These pictures could prove vital in investigating this crime and I'm appealing for anyone who has images from the event to contact the incident room."
"It was pure luck that no one was killed during this incident. The gunman fired an automatic weapon into the crowd; hitting three people. He is obviously an extremely dangerous individual who had complete disregard to the safety of anyone else at the event."
Officers from MPS Trident are investigating, anyone with any information is asked to contact the incident room on 020 8733 4774 or call Crimestoppers on 0800 555 111.
Three men were arrested in a car in NW9 following the incident.
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