Police said on Friday morning that four men had been arrested the previous night on suspicion of attempted murder and possession of a firearm.
It follows an incident in Blythe Street off Sandy Row in south Belfast on Wednesday.
Police had received a report at around 11.15pm of three men in the area dressed in black, wearing balaclavas, with one armed with a firearm.
No gunfire was reported to police
On Thursday evening, police arrested four men aged 40, two aged 41, and another aged 44 on suspicion of attempted murder and possession of a firearm.
They were released on police bail pending further enquiries.