Six people have been arrested and 57 infringement notices issued after a group of men wearing all black, including balaclavas, sparked a police operation in North Sydney on Friday. Key points: Police stopped the train at North Sydney Station Police stopped the train at North Sydney Station A witness to the incident said he had a "bit of fear" A witness to the incident said he had a "bit of fear" Premier Chris Minns has condemned the men A train travelling into the CBD abruptly terminated at North Sydney Station due to the operation, which started about 11.30am after police...