At another power plant, the Dolna Odra near Szczecin, members of the official trade union told officials they are protesting their pay, but no strike was declared, according to the state-run PAP news service.
Marchers walked from the central market to a square about 15 blocks away, then another 15 blocks to a park on an island in the Odra River, he said, with some people painting slogans on walls and a police van en route.