Naseem, a fish and chip shop worker who only gave his first name, said he could see about six fire trucks as well as police and an ambulance across the road from his work on Wakefield St.
15 trucks and 50 crew had been sent and the sixth storey fire was out by 5.30pm.
Fire services at the scene. Photo / Nick Reed
Crew were checking whether anyone had been hurt but Osmond said it seemed unlikely at this stage.
It wasn't yet clear what had caused the fire, he said.
Assistant Area Commander Barry Fox said, "We have responded to a fire on the sixth floor of an apartment building here in the central city. On arrival we had a good amount of smoke issuing from that balcony, deck area of that apartment and we have fought it internally. Firefighters have gone up there and used a delivery off an internal riser system and we have put the fire out.
"At this stage we are just dampening and checking the rest of the building for smoke spread."
"There have been no reported injuries."
"We are still in that extinguishment phase and will drop into the investigation phase in a few minutes once we have got it cleaned up and find out what the cause was.
"The fire was isolated to one apartment."
Fire and emergency crews have now removed the crane and all hoses from the apartment.