Sydney ferry phone threat resolved: police

NSW Police are investigating a threat made at Manly Wharf which forced the shutdown of peak-hour ferries.

Ferries were halted between Sydney's Circular Quay and Manly after a phone threat. (AAP)

NSW Police are investigating a threat made against Manly Wharf which prompted the shutdown of peak-hour ferries.

Police confirmed a threat was called in to the wharf on Wednesday afternoon about 5pm.

People who were at the scene were evacuated and took to social media, describing the event as a "bomb scare".

"Extensive searches of the ferries and wharf areas were conducted, before all areas were deemed safe," NSW Police said in a statement two hours later.

Investigators are now working to trace the origin of the threat and ferries have resumed.