ATHENS (Reuters) - A fire broke out at a plastics factory in a suburb of the Greek capital Athens on Monday, the fire brigade said, but there were no immediate reports of any injured people.

       Greek media footage showed towers of thick smoke pouring out of the plant in Aspropyrgos town, west of Athens.

       Civil protection authorities issued an emergency appeal for residents to stay indoors as inhaling smoke could be dangerous.

       It was not immediately clear what caused the fire, a fire brigade official said.

       Some 50 firemen with 20 fire engines were battling the blaze, the fire brigade said.

       (Reporting by Angeliki Koutantou; Editing by Chris Reese)