Detectives are appealing for information and witnesses after five people were injured in south London.
In particular officers are asking anyone with images of the incident to contact police.
Police were called at about 03: 30hrs on Saturday, 18 June after five men – aged in their 20s – self-presented at two south London hospitals with gunshot and knife injuries.
At this stage, it is believed that all five were injured during a disturbance close to Wandsworth Road, SW8 during which a shotgun was discharged.
One of the victims, aged 20-years-old, remains in hospital with gunshot and knife injuries.
DC Matthew Moss from Specialist Crime (Trident) said: “Five people have been injured by the discharge of a firearm in a public place. One of those injured was very badly hurt and his injuries are likely have a permanent impact on his life.
“We need the public’s help to stop this wanton violence and I am asking anyone with information, in particular camera images, to phone police.
“If you do not wish to speak with police, and to want to stay completely anonymous, please contact the charity Crimestoppers, they will never ask your name, they cannot trace your call, your IP address or the device you use.”
There have been no arrests and enquiries continue.
Any witnesses or anyone with any information is asked to call police on 101 or 020 8247 4863 or contact via Twitter @MetCC. Please quote CAD 1192/18Jun.
To give information anonymously contact Crimestoppers on 0800 555 111 or online at crimestoppers-uk.org.