(Reuters) - Russian troops are approaching Ukraine's nuclear power plant in Zaporizhzhia and have aimed their rockets at the site, Vadym Denysenko, an adviser to Ukraine's interior minister, said on Saturday.

       Russia has already captured the defunct Chernobyl plant, some 100 km north of Ukraine's capital Kyiv.

       (Reporting by Natalia Zinets; Writing by Gabriela Baczynska; Editing by Alison Williams)