A 24-year-old man has been arrested after a firearm was fired in Southampton, police have said.
Hampshire police said it was called to reports of a firearm being "discharged" at about 23:15 BST on Friday between Kingsway and Craven Street.
The force said there were a number of people in the underpass at the time but added no-one was injured.
Det Insp Justin Dipper said a a firearm had been found and added there would be increased police presence in the area.
The suspect, from Southampton, has been arrested on suspicion of possessing a firearm and is currently in police custody.