Police from Sydney City Local Area Command shut down a dance party at a club last night in Sydney.

During the evening of Sunday 28 June 2015, emergency services were called on a number of occasions to an organised dance party at a club on George Street, Sydney, after reports of alleged drug overdoses.

At 9.40pm, that evening, officers were again called to the location after reports a 50-year-old woman was in need of medical treatment.

Police attended and two patrons were conveyed by ambulance to hospital, while a number of others were removed from the premises under the effects of what is believed to be prohibited drugs.

Investigators spoke to the licensee and, under agreement, the dance party was shut down early and all patrons removed.

The incident is now being investigated by Sydney City Local Area Command Licensing officers and ALEC.