On Wednesday, 18 January, a 26-year-old man was arrested in Sheffield on suspicion of attempted murder and ammunition possession; he is being held in London.
A 25-year-old man who was arrested on suspicion of possessing a firearm with intent to cause fear of violence on Wednesday, December 28th, has been bailed pending further investigation.
An investigation into the circumstances is still ongoing, with the goal of identifying and tracking down all those involved.