birmingham
The chief superintendent of West Midlands Police said the incident could have been "the worst thing" some officers had "ever seen".
Seven police officers were injured during the incident.
James Teer was shot dead in a residential street where he had been playing football with friends.
West Midlands police is investigating the incident.
West Midlands Police say a 44-year-old remains in police custody.
His death is being treated as unexplained.
Mubashar Hussain, 29, is accused of a host of offences relating to the incident on Saturday.
Home Secretary Priti Patel said she was “appalled” by the attack on the officer, who is due to have his second surgery later on Sunday.
Children were nearby when a gunman opened fire.
