A man has been charged after a fake bomb was found inside a toilet block at a park in inner Brisbane, sparking a security scare.

The man allegedly ran into the busy Brisbane Jazz Club at Kangaroo Point, saying there was a bomb in a nearby toilet block.

Queensland Police then reportedly found a device with wires coming from it in the toilet block at Captain Burke Park.

The device was found to be inert. (9NEWS)

A man is arrested in the area. (9NEWS)

Specialist police were called to the scene and an emergency situation was declared at 11pm AEST, with police clearing areas around Holman Street and putting traffic diversions in place.

The item was examined and was determined to be "inert" by specialist police, and the emergent situation was revoked at 12.35am.

A 28-year-old man from Deception Bay was charged with a bomb hoax offence and is expected to appear at the Brisbane Magistrates Court today.

Police at the scene in Kangaroo Point. (9NEWS)