Breaking news from Sydney.
Police have entered an Oxford Street building amidst claims an armed man was present in the Sydney CBD building.
The Daily Telegraph reports the police operation was sparked when a person inside the building messaged a friend saying a gunman was in the building.
Dozens of police entered the foyer at 1 Oxford Street with guns drawn around 4.30pm.
Six ambulance crews are on standby nearby.
— Amichai Stein (@AmichaiStein1) November 18, 2015
News Limited reports police are carrying out a search of the building and taking the threat seriously.
Police say there is no evidence the reported incident is terror-related.
#Darlinghurst building search ongoing. Improtant: There is no evidence this is a terrorism-related incident.
— NSW Police (@nswpolice) November 18, 2015