A man suspected of killing five people in Plymouth before turning the gun on himself has been named locally as Jake Davison, BBC reports.
Three females and two males were shot in the Keyham area of the city on Thursday evening.
Police said the incident, the worst mass shooting in Britain since 2010, is not terror-related.
Five died, including the suspect, at the scene and one died in hospital. An MP has said one victim was a child.
Emergency services were called to Biddick Drive shortly after 18:00 BST on Thursday.
The force added: "The area has been cordoned off and police are not looking for anyone else in connection with the incident."
Prime minister Boris Johnson tweeted: "My thoughts are with the friends and family of those who lost their lives and with all those affected by the tragic incident in Plymouth last night.
"I thank the emergency services for their response."
Plymouth Sutton and Devonport MP Luke Pollard added it was "unspeakably awful" and he was "utterly devastated" to learn one of those killed was a child.
People were asked to stay inside and follow police advice as the emergency services responded.