Police were called to a disturbance at a Stoke-on-Trent bar and found an unconscious man who later died.
Firearms officers and dog units attended the scene in Hanley city centre after the teenagers were caught on CCTV brandishing BB guns.
Four men were arrested in Stoke this afternoon on suspicion of firearms offences after they were spotted acting suspiciously.
The men were aged 16, 17, 17, and 27.
Staff at the city centre's CCTV control unit alerted police to the men in question after they were seen to be in possession of what looked like a firearm.
Armed officers were called to the city centre and the men were found in Hanley at around 4.15pm in the Stafford Street area.
Officers recovered what is believed to be two firearms which will be examined.
Police are investigating after a body was found in Hanley.
It was discovered yesterday afternoon at a house in Bromley Court around 14:00 and forensic investigations are now taking place.
A 20-year-old woman from Stoke-on-Trent has been arrested on suspicion of murder and is being questioned by police.
It's believed the people involved were known to each other.
Detectives investigating a death in Hanley have arrested 40-year-old man on suspicion of murder.
Police were called to Wainwright Walk, off Bucknall New Road in Hanley, just before half past five this morning. A man was pronounced dead at the scene.
Police are investigating two serious assaults that happened in the early hours of this morning at Touch Nightclub in Hanley, Stoke-on-Trent.
Two men were taken to hospital with facial injuries after the attack.
Police are appealing for information in relation to the assaults.
Two children rescued from fire started by heater