Six Extinction Rebellion protesters have been charged after some of them locked their necks to barricades that blocked a street in the Brisbane CBD on Wednesday morning.

The protest began about 8am at Creek Street and the scene was cleared by police within the hour.

Extinction Rebellion protesters locked themselves to a barricade on the road in Brisbane's CBD on Wednesday morning.

Police received a call to remove about 20 protesters but upon arrival, officers found four men and two women locked to metal fencing in the middle of the road.

A police spokesman told Brisbane Times officers had initially arrested seven people and searched for other protesters who fled the scene.