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Three men arrested on Monday night after armed police were called to the Lido in Cliftonville have been released on bail.
The men have been released until February 26.
Dane Hill was shut at both ends at about 5pm on Monday after reports that a man had been seen with a gun.
At about 9.45pm on the same evening police took three men into custody on suspicion of making threats to kill.
Police spokesman Scarlet Jones said: "The men have been released on police bail until February 26 while inquiries continue."
No injuries were reported at the scene.
Several police vehicles parked at the Lido nearby, including armed response.
Dane Hill was reopened just before 10pm.