Six people have been arrested in Freehold Street in Loughborough in connection with a firearms incident.
Officers said they were called shortly after 8.20am on Tuesday 26 March to reports that during an altercation a man was assaulted with a bunch of keys.
Leicestershire Police said the victim's injuries are not life-threatening.
There was also a report that one person may have been in possession of a firearm.
A police statement said: "In the interest of police and public safety, armed officers were deployed. As part of the investigation, a vehicle was subsequently stopped in Freehold Street, Loughborough and the four occupants were arrested."
Police said a 19-year-old man and a 42-year-old woman were arrested on suspicion of possession of a prohibited firearm and causing actual bodily harm.
A 40-year-old woman and a 17-year-old man were also arrested on suspicion of possession of a prohibited firearm.
All four remain in custody and enquiries are ongoing.
A 35-year-old man was arrested on suspicion of possession of cannabis with intent to supply.
A 22-year-old woman was arrested on suspicion of possession of a prohibited firearm.
All six people remain in custody being questioned by officers. Police are asking for any witnesses to call 101, quoting incident 113 of 26 March.
Changes to Fosse Park approved
Extra police patrols coming to market towns
Woman in her 70s loses thousands in courier fraud scam
Leicestershire parents vote to keep October half term
Airport apologises over data breach
Petition to reopen Shepshed tip
Appeal for information following serious collision in Queniborough
Aerial photographs of the Bee Hive Car Park taking shape
