HALIFAX -- At least four people are in custody after police responded to a weapons call in Halifax's north end.

There was a heavy police presence in the 2700 block of Clifton Street as officers responded to the scene Thursday morning.

Police appeared to converge on a small apartment building. At least one officer had a weapon drawn.

At least four people were handcuffed and taken away by police.

Officials say no injuries were reported, but an ambulance was standing by.

A section of Clifton Street was closed for several hours Thursday. Police say the street has since reopened but investigators remain on scene.

Police say the investigation is ongoing.

With files from CTV Atlantic's Emily Baron Cadloff